3M™ Fiber Optic Splice Closure 2178 Family
Flexible Fiber
Management Solutions
2
A full line of closures and accessories designed to protect fiber optic facilities. The 3M™
Fiber Optic Splice Closure 2178 family has earned its reputation for reliable protection of
fiber optic facilities. Now, the 2178 family includes many models and configurations for
more flexibility to help meet the complex needs of today’s fiber optic networks.
Growing technologies require
growing solutions.
You want to build reliable FTTP networks faster and cheaper. The expanded 3M™ Fiber Optic
Splice Closure 2178 family can help you meet these needs for most applications (including aerial,
buried, underground, vault and building entrance) and cables (including loose buffer tube, tight
buffer tube, central tube, discrete fiber, ribbon fiber, armored or dielectric).
More flexibility
fiber optic
network
for your complex
Fully assembled 3M™ Fiber Optic
Splice Closure 2178-S with two LBT cables
Installation of 4-port grommet into the 3M™ Fiber Optic Splice Closure
2178-S. Expanding the 3M™ Fiber Optic Splice Closure 2178-S with the
3M™ Expansion Kit 2181-LS
Close-up of reusable gasket
3M™ Fiber Optic Splice Closure 2178 Family
MULTIPLE SOLUTIONS FOR EVOLVING NETWORKS.
The 3M Fiber Optic Splice Closure 2178 family provides multiple real-world solutions with five key aspects:
1 A Complete Product Family
The 3M Fiber Optic Splice Closure 2178 family includes
seven distinct models (XSB, XLB, S, SL, LS, LL and XL)
in both flame-retardant and non-flame-retardant versions,
each with flexibility built-in for growing networks.
2 Future-Proof Solutions
The 2178 family has scalability and flexibility, allowing
you to expand the system based on splicing capacity
and the number of cable entry ports. It also allows
you to defer your investment until it is required.
3 Easily Re-Enterable Designs
A reusable gasket makes re-entry easy,
while bolted halves provide greater security than
that of dome closures. With the 2178 family, you
can re-enter, re-configure and add or remove cables
in most outside plant and inside plant environments.
(continued)
3
(Available in flame retardant)
Local Loop
Network
Long Haul Metropolitan
Network
Local Access
Network
Metro Core Metro Edge
FTTP
Hybrid
Fiber Coax
FDH
HFC
Node
DSL
DSLAM
Single Family Unit
Multi-Dwelling Unit
Single Tenant Unit
Multi-Tenant Unit
Enterprise
Central
Office
Central
Office
Video
Head End
Premises
3M™ Fiber Optic Splice Closure 2178-XSB 3M™
Fiber Optic Splice Closure 2178-S
3M™ Fiber Optic Splice Closure 2178-XLB 3M™
Fiber Optic Splice Closure 2178-SL
3M™ Fiber Optic Splice Closure 2178-LS 3M™
Fiber Optic Splice Closure 2178-LL
3M™ Fiber Optic Splice Closure 2178-XL 3M™ Fiber Optic Splice Closure 2178-LS
3M™ Fiber Optic Splice Closure 2178-SL 3M™ Fiber Optic Splice Closure 2178-LL
3M™ Fiber Optic Splice Closure 2178-S
3M™ Fiber Optic Splice Closure 2178-FR3M™ Fiber Optic Splice Closure 2178-XLB
3M™ Fiber Optic Splice Closure 2178-XSB
3M™ Fiber Optic Splice Closure 2178-LS
3M™ Fiber Optic Splice Closure 2178-SL
3M™ Fiber Optic Splice Closure 2178-S
4
MULTIPLE SOLUTIONS (CONTINUED)
4 Flexible Environmental Applications
The 3M™ Fiber Optic Splice Closure 2178 family can be effectively used in nearly
any application including aerial (pole and strand) mount, central office vault,
manhole, pedestal and handhole. It can also accommodate most splicing methods
(mechanical and fusion) as well as inline and butt splicing configurations.
5 Network Flexibility
3M designs a variety of sizes, materials (flame retardant vs. non flame retardant)
and configuration options so that our fiber optic splice closures can be used in almost
every segment of the network. A single product family meets a range of needs.
3M™ Fiber Optic Splice Closure 2178/FR Flame Retardant Series
(Available in flame retardant)
Local Loop
Network
Long Haul Metropolitan
Network
Local Access
Network
Metro Core Metro Edge
FTTP
Hybrid
Fiber Coax
FDH
HFC
Node
DSL
DSLAM
Single Family Unit
Multi-Dwelling Unit
Single Tenant Unit
Multi-Tenant Unit
Enterprise
Central
Office
Central
Office
Video
Head End
Premises
3M™ Fiber Optic Splice Closure 2178-XSB 3M™ Fiber Optic Splice Closure 2178-S
3M™ Fiber Optic Splice Closure 2178-XLB 3M™ Fiber Optic Splice Closure 2178-SL
3M™ Fiber Optic Splice Closure 2178-LS 3M™ Fiber Optic Splice Closure 2178-LL
3M™ Fiber Optic Splice Closure 2178-XL 3M™ Fiber Optic Splice Closure 2178-LS
3M™ Fiber Optic Splice Closure 2178-SL 3M™ Fiber Optic Splice Closure 2178-LL
3M™ Fiber Optic Splice Closure 2178-S
3M™ Fiber Optic Splice Closure 2178-FR3M™ Fiber Optic Splice Closure 2178-XLB
3M™ Fiber Optic Splice Closure 2178-XSB
3M™ Fiber Optic Splice Closure 2178-LS
3M™ Fiber Optic Splice Closure 2178-SL
3M™ Fiber Optic Splice Closure 2178-S
5
Flexible Environmental Applications within the Physical-Media Layer
Aerial Fiber Plant
Premises
Buried/Underground
Fiber Plant
2178
2178
2178
Central Office
6
More Advantages with a Complete Solution
FLEXIBILITY THAT CAN SAVE YOU TIME AND MONEY.
The 3M™ Fiber Optic Splice Closure 2178 family provides excellent system flexibility for both existing and new fiber deployments.
Products in the 2178 family are industry-proven. The flexible design and common accessories allow you to maintain a reduced inventory,
which can save time and money.
SMART DESIGN MAKES YOUR JOB EASIER.
All 2178 closures are designed to be easy to install, easy to use and easy to re-enter. The reusable gasket helps make re-entry
as easy as any other system with almost no training necessary.
The 2178 family accommodates most splicing configurations (inline or butt).
NEW FEATURES TO MEET NEW DEMANDS.
The closures accommodate cables of varying sizes and provide flexibility to add
ports with the cable addition kit. Two additions to the system (the 3M™ Cable
Addition Kits 2181-XL, 2181-XB and 3M™ 4- and 6-Port Grommets) make system
expansion even easier than before. A flexible tray system allows positionable or
fixed splice inserts. Technicians can re-enter and swap out splice holders, and
mix and match splice types (fusion and mechanical). The same tray can be used
for discrete or mass splicing.
All of these features combine to give you an enhanced ability to offer optimum
bandwidth for triple play services of voice, data and video.
3M™ 4- and 6-Port Grommets for
3M™ Fiber Optic Splice Closure 2178 Series
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3M™ Fiber Optic Splice Closure 2178 Family
FEATURES AND BENEFITS
Full range of sizes Fits your specific application
No special tools required (standard torque wrench) Easy installation and re-entry
Constructed of a highly chemical-resistant material Can be deployed in most applications:
buried, underground and aerial
Gasket seals Reusable for easy re-entry
Unique strength member clamp assembly Prevents cable sheath movement with
temperature changes
Spacious fiber management areas All closures provide separate areas for
routing, protecting, and expressing
buffer tubes and ribbon fibers
Flexible drop or cable addition Multiport grommets provide entry for
drops or cables
Flame-retardant materials All 2178 closures are available in
a flame-retardant model, giving you
even more application choices
Flame Retardant Material: UL-94V-0
3M™ Fiber Optic Splice Closure 2178-LS
Available in flame retardant
3M™ Fiber Optic Splice Closure 2178-XSB
Available in flame retardant
3M™ Fiber Optic Splice Closure 2178-XLB
Available in flame retardant
3M™ Fiber Optic Splice Closure 2178-S
Available in flame retardant
3M™ Fiber Optic Splice Closure 2178-SL
Available in flame retardant
3M™ Fiber Optic Splice Closure 2178-LL
Available in flame retardant
3M™ Fiber Optic Splice Closure 2178-XL
Available in flame retardant
8
The 3M™ Fiber Optic Splice Closure 2178 family provides secure protection for a broad range of fiber cables. The 2178 family
is engineered to meet common needs and field conditions, with different sizes to accommodate varying splice counts.
All 2178 closures are made of a tough chemical-resistant material and have a gasket seal making them ideal for a wide
variety of applications.
Reliable Protection for Your Application
Product
Number
Size
in. (mm)
(L x W x H)
Splice
Configuration
Cable Entry
Ports
Maximum
Splice Capacity
2178-XSB
14.6 x 10.1 x 4.6
(369.8 x 256.5 x 117.3) Butt 3 Butt 48 Single Fusion
288 Mass Fusion
2178-XLB
14.6 x 10.1 x 5.8
(369.8 x 256.5 x 147) Butt 3 Butt 96 Single Fusion
432 Mass Fusion
2178-S
21.9 x 8.5 x 4.7
(556.3 x 215.9 x 119.4)
Inline
Butt
4 Inline
2 Butt
96 Single Fusion
288 Mass Fusion
2178-SL
21.9 x 8.5 x 8.0
(556.3 x 215.9 x 203.2)
Inline
Butt
4 Inline
2 Butt
96 Single Fusion
288 Mass Fusion
2178-LS
21.9 x 8.5 x 8.0
(556.3 x 215.9 x 203.2)
Inline
Butt
4 Inline
2 Butt
288 Single Fusion
864 Mass Fusion
2178-LL
21.9 x 8.5 x 11.3
(556.3 x 215.9 x 287.0)
Inline
Butt
4 Inline
2 Butt
288 Single Fusion
864 Mass Fusion
2178-XL
27.0 x 13.3 x 11.0
(660.4 x 337.8 x 279.4)
Inline
Butt
8 Inline
4 Butt
576 Single Fusion
1728 Mass Fusion
3M™ Fiber Optic Splice Closure 2178
9
Size Splice Max Cable Entry Ports
(L x W x H ) Application Main Branch
2178-XSB
(14.6" x 10.1" x 4.6") Butt 2 Butt 1 Butt
2178-XLB WITH ONE 2181-XB
(14.6" x 10.1" x 7.93") Butt 2 Butt 4 Butt
2178-S
(21.9" x 8.5" x 4.7") Butt or Inline 2 Butt, 2 Inline 0 Butt, 2 Inline
2178-XLB
(14.6" x 10.1" x 5.8") Butt 2 Butt 1 Butt
2178-XSB WITH ONE 2181-XB
(14.6" x 10.1" x 6.73") Butt 2 Butt 4 Butt
2178-SL WITH ONE 2181-LS
(21.9" x 8.5" x 9.5") Butt or Inline 2 Butt, 2 Inline 2 Butt, 6 Inline
2178-SL WITH TWO 2181-LS
(21.9" x 8.5" x 11.0") Butt or Inline 2 Butt, 2 Inline 4 Butt, 10 Inline
2178-S WITH ONE 2181-LS
(21.9" x 8.5" x 6.2") Butt or Inline 2 Butt, 2 Inline 2 Butt, 6 Inline
2178-S WITH TWO 2181-LS
(21.9" x 8.5" x 7.7") Butt or Inline 2 Butt, 2 Inline 4 Butt, 10 Inline
2178-S WITH THREE 2181-LS
(21.9" x 8.5" x 9.2") Butt or Inline 2 Butt, 2 Inline 6 Butt, 14 Inline
2178-SL
(21.9" x 8.5" x 8.0") Butt or Inline 2 Butt, 2 Inline 0 Butt, 2 Inline
Grow as You Go with Multiple Entry Port Configurations
3M™ FIBER OPTIC SPLICE CLOSURE 2178
10
2178-SL WITH THREE 2181-LS
(21.9" x 8.5" x 12.5") Butt or Inline 2 Butt, 2 Inline 6 Butt, 14 Inline
2178-LS WITH ONE 2181-LS
(21.9" x 8.5" x 9.5") Butt or Inline 2 Butt, 2 Inline 2 Butt, 6 Inline
2178-LS
(21.9" x 8.5" x 8.0") Butt or Inline 2 Butt, 2 Inline 0 Butt, 2 Inline
2178-LS WITH TWO 2181-LS
(21.9" x 8.5" x 11.0") Butt or Inline 2 Butt, 2 Inline 4 Butt, 10 Inline
2178-LL WITH TWO 2181-LS
(21.9" x 8.5" x 14.3") Butt or Inline 2 Butt, 2 Inline 4 Butt, 10 Inline
2178-LL WITH THREE 2181-LS
(21.9" x 8.5" x 15.8") Butt or Inline 2 Butt, 4 Inline 6 Butt, 14 Inline
2178-XL
(27.0" x 13.3" x 11.0") Butt or Inline 2 Butt, 2 Inline 2 Butt, 6 Inline
2178-XL WITH ONE 2181-XL
(27.0" x 13.3" x 14.25") Butt or Inline 2 Butt, 2 Inline 6 Butt, 14 Inline
2178-LS WITH THREE 2181-LS
(21.9" x 8.5" x 12.5") Butt or Inline 2 Butt, 4 Inline 6 Butt, 14 Inline
2178-LL
(21.9" x 8.5" x 11.3") Butt or Inline 2 Butt, 2 Inline 0 Butt, 2 Inline
2178-LL WITH ONE 2181-LS
(21.9" x 8.5" x 12.8") Butt or Inline 2 Butt, 2 Inline 2 Butt, 6 Inline
3M™ FIBER OPTIC SPLICE CLOSURE 2178
Size Splice Max Cable Entry Ports
(L x W x H ) Application Main Branch
11
12
Flexible Fiber Management
One of the greatest advantages of the 3M™ Fiber Optic Splice Closure 2178 family is flexibility. With seven different
closures and several tray choices and expansion kits, there are more configuration choices than ever.
3M™ Fiber Optic Splice Trays
PRODUCT
NUMBER DESCRIPTION SPLICES
ACCOMMODATED
SPLICE CAPACITY
PER TRAY 2178 CLOSURE
2522*
Stackable hinged tray,
fiber entry/exit at any
corner of the tray,
fixed splice holders
Single Fusion (3.0 mm x 60 mm)
Single Mechanical (Fibrlok™)
Mass Fusion
24
12
120
S, LS, LL, SL
2522-24-SF
Stackable hinged tray,
fiber entry/exit at any
corner of the tray,
fixed splice holders
Single Fusion (3.0 mm x 60 mm) 24 S, LS, LL, SL
2523*
Stackable hinged tray,
fiber entry/exit at any
corner of the tray,
fixed splice holders
Single Fusion (3.0 mm x 60 mm)
Single Mechanical (Fibrlok™)
Mass Fusion
48
24
144
S, LS, LL, SL, XL
2523-48-SF
Stackable hinged tray,
fiber entry/exit at any
corner of the tray,
fixed splice holders
Single Fusion (3.0 mm x 60 mm) 48 S, LS, LL, SL, XL
2524*
Stackable, hinged tray lid,
side entry, fixed
splice holders
Single Fusion (3.0 mm x 60 mm)
Single Mechanical (Fibrlok™)
24
24 S, LS, LL, SL, XL
2524-FT
Stackable, hinged tray lid,
side entry, fixed
splice holders
Single Fusion (3.0 mm x 60 mm) 24 S, LS, LL, SL, XL
2527
Stackable, fiber entry/exit
both ends of tray,
positionable splice holders
Single Fusion (3.0 mm x 60 mm)
Single Mechanical (Fibrlok™)
Mass Fusion
24
12
144
S, LS, LL, SL, XL
2527-48-SF
Stackable, fiber entry/exit
both ends of tray,
positionable splice holders
Single Fusion (3.0 mm x 60 mm) 48 S, LS, LL, SL, XL
2532
Stackable, fiber entry/exit
both ends of tray,
positionable splice holders
Single Fusion (3.0 mm x 60 mm)
Single Mechanical (Fibrlok™)
Mass Fusion
24
12
144
XLB
XSB
2539-12-SF Hinged, fixed
spliced holders Single Fusion (2.4 mm x 60 mm) 12 XLB
XSB
2540-12-SF/36-MF Hinged, fixed
spliced holders
Single Fusion (2.4 mm x 60 mm)
Single Mechanical (Fibrlok™)
Mass Fusion
12
12
36
XLB
XSB
2543
Stackable, fiber entry/exit
both ends of tray,
positionable splice holders
Single Fusion (3.0 mm x 60 mm)
Single Mechanical (Fibrlok™)
Mass Fusion
24
12
144
S, LS, LL, SL, XL
* Requires additional kit
SIZE: L X W X H (MM)
XSB OR XSB/FR 2178 XSB, 14.6"x10.1x4.6" (369.8 x 256.5 x 117.3);
2 - 1.0" (25 mm) ports & 1 - 1.4" (35 mm) port
XLB OR XLB/FR 2178 XSB, 14.6"x10.1x5.8" (369.8 x 256.5 x 147.3);
2 - 1.0" (25 mm) ports & 1 - 1.4" (35 mm) port
S OR S/FR 2178 S, 21.9" x 8.5"x 4.7" (556.3 x 215.9 x 119.4);
2 - 1.0" (25 mm) ports per end
S4 OR S4/FR 2178 S4, 21.9" x 8.5"x 6.2" (556.3 x 215.9 x);
4 - 1.0" (25 mm) ports per end
S6 OR S6/FR 2178 S6, 21.9" x 8.5"x 7.7" (556.3 x 215.9 x);
6 - 1.0" (25 mm) ports per end
SL OR SL/FR 2178 SL, 21.9" x 8.5" x 8.0" (556.3 x 215.9 x 203.2);
2 - 1.0" (25 mm) ports per end
LS OR LS/FR 2178 LS, 21.9" x 8.5" x 8.0" (556.3 x 215.9 x 203.2);
2 - 1.0" (25 mm) ports per end
LS4 OR LS4/FR 2178 LS4, 21.9" x 8.5" x 9.5" (556.3 x 215.9 x );
4 - 1.0" (25 mm) ports per end
LS6 OR LS6/FR 2178 LS6, 21.9" x 8.5" x 11.0" (556.3 x 215.9 x );
6 - 1.0" (25 mm) ports per end
LL OR LL/FR 2178 LL, 21.9" x 8.5" x 11.3" (556.3 x 215.9 x 287.0);
2 - 1.0" (25 mm) ports per end
LL4 OR LL4/FR 2178 LL, 21.9" x 8.5" x 12.8" (556.3 x 215.9 x );
4 - 1.0" (25 mm) ports per end
XL OR XL/FR 2178 XL, 27.0" x 13.3" x 11.0" (660.4 x 337.8 x 279.4);
2 - 1.0" (25 mm) & 2 - 1.4" (35 mm) ports per end
SPLICING CONFIGURATION
AInline or Butt
BButt only
CABLE ENTRY KITS
02 - 12 Number of cable entry kits shipped with the closure. 2178-XSB and 2178-XLB is only available with 2
or 3. 2178-XL is only available with 4 or 8. 2178-S, LS, LL & SL is available with up to 6 kits per end.
SPLICE TRAYS
00-14 Number of splice trays
TYPE OF SPLICE TRAY
NNone
A2522-24-SF (accommodates 24 3.0 x 60 mm single fusion splices; S, SL, LS, LL & XL only)
C2523-48-SF (accommodates 48 3.0 x 60 mm single fusion splices; S, SL, LS, LL & XL only)
D2524-FT (accommodates 24 3.0 x 60 mm single fusion splices; S, SL, LS, LL & XL only)
E2527 (accommodates 24 3.0 x 60 mm single fusion, 144 mass fusion, or 12 Fibrlok™ Splices; S, SL, LS, LL & XL only)
F2527-48-SF (accommodates 48 3.0 x 60 mm single fusion splices; S, SL, LS, LL & XL only)
G2532 (accommodates 24 3.0 x 60 mm single fusion, 72 mass fusion or 6 Fibrlok splices; XSB/XLB only)
K2539 (accommodates 12 2.4 x 60 mm single fusion splices; XSB/XLB only)
L2540 (accommodates 12 2.4 x 60 mm single fusion or 36 mass fusion splices; XSB/XLB only)
M2543-U-24-SF-3.0MM/144-MF (accommodates 24 3.0 mm x 60 mm single fusion, 144 mass fusion; S, SL, LS, LL & XL only)
N2543-S-24-SF-2.4MM (accommodates 24 2.4 mm x 60 mm single fusion; S, SL, LS, LL & XL only)
P2543-S-24-SF-3.0MM (accommodates 24 3.0 mm x 60 mm single fusion; S, SL, LS, LL & XL only)
Q2543-T-144-MF (accommodates 144 mass fusion splices; S, SL, LS, LL & XL only)
GROMMETS
0-4 Number of grommets
TYPE OF GROMMETS
NNone
A1.0" flat drop cable grommet
B1.4" flat drop cable grommet
GROUND LUGS
0None
22 lugs (not available with XL)
33 lugs (XSB & XLB only)
44 lugs (S, LS, LL, SL & XL only)
88 ground lugs (LL & XL only)
GROUNDING KITS
0-8 Number of ground kits
TYPE OF GROUND KIT
NNone
A4460-D/FO
B4460-D
C4460-D with #6 ground wire
D4460-D/FO with #6 ground wire
E2178-EGI Kit
3M™ Fiber Optic Splice Closures 2178 Product Family
Configuration Guide
PRODUCT NUMBER 2178 XXX/XX X- - - - -
XX XXX XXX XX
13
Select the Right Combination for Your Specific Application
As the chart below demonstrates, 3M provides several options for configuring the products you need today, with room to grow
tomorrow. Follow the example to the right to find the components for your particular application.
Specifications
3M™ FIBER OPTIC SPLICE CLOSURE 2178
PRODUCT CONFIGURATION CABLE ENTRY PORTS PER SPLICING CONFIGURATION SPLICE CAPACITY PER SPLICE TRAY
BUTT INLINE 2527 2522 2523 2524 2532 2539-12-SF 2540-12-SF/36-MF 2543
MAIN BRANCH MAIN BRANCH SIZE SF SF MF SF MF SF MF SF SF MF SF SF MF SF MF
TRAYS 24 48 144 TRAYS 24 144 TRAYS 48 144 TRAYS 24 TRAYS 24 144 TRAYS 12 TRAYS 12 36 TRAYS 24 144
2178-S or SL 2 0 2 2 1.0" 2 48 96 288 2 48 288 2 96 288 2 48 - - - - - - - - 2 48 288
2178-S or SL w/ one 2181-LS 2 0 2 2 1.0" 5 120 240 720 5 120 720 4 192 576 4 96 - - - - - - - - 5 120 720
2178-S or SL w/ one 2181-LS 2 2 2 6 1.0" 2 48 96 288 2 48 288 2 96 288 2 48 - - - - - - - - 2 48 288
2178-S or SL w/ two 2181-LS 2 0 2 2 1.0" 8 192 384 864 8 192 864 6 288 864 6 144 - - - - - - - - 8 192 864
2178-S or SL w/ two 2181-LS 2 2 2 6 1.0" 5 120 240 720 5 120 720 4 192 576 4 96 - - - - - - - - 5 120 720
2178-S or SL w/ two 2181-LS 2 4 2 10 1.0" 2 48 96 288 2 48 288 2 96 288 2 48 - - - - - - - - 2 48 288
2178-S or SL w/ three 2181-LS 2 2 2 6 1.0" 8 120 384 864 8 192 864 6 288 864 6 144 - - - - - - - - 8 192 864
2178-S or SL w/ three 2181-LS 2 4 2 10 1.0" 5 120 240 720 5 120 720 5 240 720 5 120 - - - - - - - - 5 120 720
2178-S or SL w/ three 2181-LS 2 6 2 14 1.0" 2 48 96 288 2 48 288 2 96 288 2 48 - - - - - - - - 2 48 288
2178-LS 2 0 2 2 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LS w/ one 2181-LS 2 2 2 6 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LS w/ two 2181-LS 2 4 2 10 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LS w/ two 2181-LS 2 2 2 6 1.0" 10 240 480 864 9 216 864 9 432 864 9 216 - - - - - - - - 10 240 864
2178-LS w/ three 2181-LS 2 4 2 10 1.0" 10 240 480 864 9 216 864 9 432 864 9 216 - - - - - - - - 10 240 864
2178-LS w/ three 2181-LS 2 6 2 14 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LL 2 0 2 2 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LL w/ one 2181-LS 2 2 2 6 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LL w/ two 2181-LS 2 4 2 10 1.0" 7 168 336 864 6 144 864 6 288 720 6 144 - - - - - - - - 7 168 864
2178-LL w/ two 2181-LS 2 2 2 6 1.0" 10 240 480 864 9 216 864 9 432 864 9 216 - - - - - - - - 10 240 864
2178-LL w/ three 2181-LS 2 4 2 10 1.0" 10 240 480 864 9 216 864 9 432 864 9 216 - - - - - - - - 10 240 864
2178-LL w/ three 2181-LS 2 6 2 14 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-XSB 2 1 - - 1 - 1.4"
2 - 1.0" - - - - - - - - - - - - 2 48 288 6 72 4 48 144 - - -
2178 XSB w/ one 2181 XB 4 2 - - 2 - 1.4"
4 - 1.0" - - - - - - - - - - - - 2 48 288 6 72 4 48 144 - - -
2178 XLB 2 1 - - 1 - 1.4"
2 - 1.0" ------------396432--------
2178 XLB w/one 2181 4 2 - - 2 - 1.4"
4 - 1.0" ------------396432--------
2178-XL 2 2 2 6 4 - 1.4"
4 - 1.0" 12 288 576 1728 12 288 1728 12 576 1728 12 288 - - - - - - - - 12 288 1728
2178-XL w/ one 2181-XL 2 6 2 14 8 - 1.4"
8 - 1.0" 12 288 576 1728 12 288 1728 12 576 1728 12 288 - - - - - - - - 12 288 1728
1
2
14
Configuration Example — If your application requires:
1 Butt splice configuration
3 Fixed-position splice holder
2 2 branch ports
4 96 single fusion splices
Then you would need the 3M™ Fiber Optic Splice Closure 2178-S with
one 3M™ Cable Addition Kit 2181 and 3M™ Splice Tray 2523.
1 Select your splice configuration 3 Choose type of tray (p. 14)
2 Determine # of branch ports 4 Select appropriate splice capacity
How to use chart:
Specifications
3M™ FIBER OPTIC SPLICE CLOSURE 2178
PRODUCT CONFIGURATION CABLE ENTRY PORTS PER SPLICING CONFIGURATION SPLICE CAPACITY PER SPLICE TRAY
BUTT INLINE 2527 2522 2523 2524 2532 2539-12-SF 2540-12-SF/36-MF 2543
MAIN BRANCH MAIN BRANCH SIZE SF SF MF SF MF SF MF SF SF MF SF SF MF SF MF
TRAYS 24 48 144 TRAYS 24 144 TRAYS 48 144 TRAYS 24 TRAYS 24 144 TRAYS 12 TRAYS 12 36 TRAYS 24 144
2178-S or SL 2 0 2 2 1.0" 2 48 96 288 2 48 288 2 96 288 2 48 - - - - - - - - 2 48 288
2178-S or SL w/ one 2181-LS 2 0 2 2 1.0" 5 120 240 720 5 120 720 4 192 576 4 96 - - - - - - - - 5 120 720
2178-S or SL w/ one 2181-LS 2 2 2 6 1.0" 2 48 96 288 2 48 288 2 96 288 2 48 - - - - - - - - 2 48 288
2178-S or SL w/ two 2181-LS 2 0 2 2 1.0" 8 192 384 864 8 192 864 6 288 864 6 144 - - - - - - - - 8 192 864
2178-S or SL w/ two 2181-LS 2 2 2 6 1.0" 5 120 240 720 5 120 720 4 192 576 4 96 - - - - - - - - 5 120 720
2178-S or SL w/ two 2181-LS 2 4 2 10 1.0" 2 48 96 288 2 48 288 2 96 288 2 48 - - - - - - - - 2 48 288
2178-S or SL w/ three 2181-LS 2 2 2 6 1.0" 8 120 384 864 8 192 864 6 288 864 6 144 - - - - - - - - 8 192 864
2178-S or SL w/ three 2181-LS 2 4 2 10 1.0" 5 120 240 720 5 120 720 5 240 720 5 120 - - - - - - - - 5 120 720
2178-S or SL w/ three 2181-LS 2 6 2 14 1.0" 2 48 96 288 2 48 288 2 96 288 2 48 - - - - - - - - 2 48 288
2178-LS 2 0 2 2 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LS w/ one 2181-LS 2 2 2 6 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LS w/ two 2181-LS 2 4 2 10 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LS w/ two 2181-LS 2 2 2 6 1.0" 10 240 480 864 9 216 864 9 432 864 9 216 - - - - - - - - 10 240 864
2178-LS w/ three 2181-LS 2 4 2 10 1.0" 10 240 480 864 9 216 864 9 432 864 9 216 - - - - - - - - 10 240 864
2178-LS w/ three 2181-LS 2 6 2 14 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LL 2 0 2 2 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LL w/ one 2181-LS 2 2 2 6 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-LL w/ two 2181-LS 2 4 2 10 1.0" 7 168 336 864 6 144 864 6 288 720 6 144 - - - - - - - - 7 168 864
2178-LL w/ two 2181-LS 2 2 2 6 1.0" 10 240 480 864 9 216 864 9 432 864 9 216 - - - - - - - - 10 240 864
2178-LL w/ three 2181-LS 2 4 2 10 1.0" 10 240 480 864 9 216 864 9 432 864 9 216 - - - - - - - - 10 240 864
2178-LL w/ three 2181-LS 2 6 2 14 1.0" 7 168 336 864 6 144 864 6 288 864 6 144 - - - - - - - - 7 168 864
2178-XSB 2 1 - - 1 - 1.4"
2 - 1.0" - - - - - - - - - - - - 2 48 288 6 72 4 48 144 - - -
2178 XSB w/ one 2181 XB 4 2 - - 2 - 1.4"
4 - 1.0" - - - - - - - - - - - - 2 48 288 6 72 4 48 144 - - -
2178 XLB 2 1 - - 1 - 1.4"
2 - 1.0" ------------396432--------
2178 XLB w/one 2181 4 2 - - 2 - 1.4"
4 - 1.0" ------------396432--------
2178-XL 2 2 2 6 4 - 1.4"
4 - 1.0" 12 288 576 1728 12 288 1728 12 576 1728 12 288 - - - - - - - - 12 288 1728
2178-XL w/ one 2181-XL 2 6 2 14 8 - 1.4"
8 - 1.0" 12 288 576 1728 12 288 1728 12 576 1728 12 288 - - - - - - - - 12 288 1728
3
4
15
16
3M™ Fiber Optic Splice Closure 2178 Accessories
SPLICE TRAYS
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
2170
PKG: 50 EACH
MIN. ORDER: 50 EACH
UPC: 054007-17676
Fiber Optic Splice Sleeve, 3.0 mm x 60 mm
Transparent plastic tube and stainless steel rod designed to prevent stress and protect fusion fiber optic
splices in field and factory operations.
2171
PKG: 50 EACH
MIN. ORDER: 50 EACH
UPC : 051115-14547
Fiber Optic Splice Sleeve, 2.4 mm x 60 mm
Transparent plastic tube and stainless steel rod designed to prevent stress and protect fusion fiber optic
splices in field and factory operations.
2519
PKG: 10 KITS
MIN. ORDER: 10 KITS
UPC: 051138-57722
Cable Fanout Kit
Transitions cable buffer tubes or single tube to fiber tube.
2519-X
PKG: 10 KITS
MIN. ORDER: 10 KITS
UPC: 051138-57723
Cable Fanout Expander Kit
Transitions one fiber tube to two fiber tubes.
2520
PKG: 50 EACH
MIN. ORDER: 50 EACH
UPC: 051138-36414
Fiber Transition Tubing, 1 ft.
Protects 12 single or four 12-fiber ribbon between trays; cut in one-foot lengths.
2520-3FT
PKG: 24 EACH
MIN. ORDER: 24 EACH
UPC: 051138-36647
Fiber Transition Tubing, 3 ft.
Protects 12 single or four 12-fiber ribbon between trays; cut in three-foot lengths.
2520-100FT
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC: 051115-26078
Fiber Transition Tubing, 100 ft.
Protects 12 single or four 12-fiber ribbon between trays; cut in 100-foot lengths.
2520-6RF-1FT
PKG: 50 EACH
MIN. ORDER: 50 EACH
UPC : 051115-06172
Fiber Transition Tubing 6-12 Fibrib 1 ft.
Protects 12 single or six 12-fiber ribbon between trays; cut in one-foot lengths.
2520-6RF-100FT
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC : 051115-06173
Fiber Transition Tubing 6-12 Fibrib 100 ft. Roll
Protects 12 single or six 12-fiber ribbon between trays; cut in 100-foot lengths.
2518
PKG: 6 EACH
MIN. ORDER: 6 EACH
UPC: 051115-26076
Fiber Transition Tubing Kit for Loose Buffer Tube
The 2518 Kit is a 2 MM fiber transition tube kit for loose buffer tube cables. It is used to transition the
fibers from the splice closure slack storage area to the splice tray.
2521-F
PKG: 12 PKGS.
MIN. ORDER: 12 PKGS.
UPC: 051138-36412
Fusion Splice Insert, 2 Pack
Holds 12 single fusion splices in each insert, used in 3M™ Fiber Splice Organizer Trays
2538/2522/2523
3.0 mm x 60 mm single fusion heat shrink sleeve required (2170 or equivalent).
2521-FL
PKG: 12 PKGS.
MIN. ORDER: 12 PKGS.
UPC: 051138-36413
3M™ Fibrlok™ Splice Insert, 2 Pack
Holds six Fibrlok or mass fusion splices in each insert, used in 2538/2522/2523 trays. Accommodates
single ceramic rod 12 fiber mass fusion sleeves or double ceramic rod
4 to 6 fiber mass fusion sleeves.
2521-R-12RF-MF-A
PKG: 24 EACH
MIN. ORDER: 24 EACH
UPC : 051115-06176
12RF Mass Fusion Splice Insert, Adhesive Back
Adhesive backed splice insert that holds six 3M™ Fibrlok™ Splices or Mass Fusion Splices, used in 2532
and 2543 trays. Accommodates single ceramic rod 12 fiber mass sleeves or double ceramic rod 4 to 6
fiber mass fusion sleeves.
17
3M™ Fiber Optic Splice Closure 2178 Accessories
SPLICE TRAYS (CONTINUED)
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
2521-R-2.4MM-SF-A
PKG: 24 EACH
MIN. ORDER: 24 EACH
UPC : 051115-06174
2.4MM Single Fusion Splice Insert, Adhesive Back
Adhesive backed splice insert that holds twelve single fusion splices in each insert, used in 2532
and 2543 trays. 2.4 mm X 60 mm single fusion heat shrink sleeve required (2171 or equivalent).
2521-R-3.0MM-SF-A
PKG: 24 EACH
MIN. ORDER: 24 EACH
UPC : 051115-06175
3.0MM Single Fusion Splice Insert, Adhesive Back
Adhesive backed splice insert that holds twelve single fusion splices in each insert, used in 2532
and 2543 trays. 3.0 mm X 60 mm single fusion heat shrink sleeve required (2170 or equivalent).
2521-MF
PKG: 12 PKGS.
MIN. ORDER: 12 PKGS.
UPC : 051138-36411
3M™ Fibrlok™ Multi-Fiber Splice Insert, 2 Pack
Holds four multi-fiber splices in each insert, used in 2522/2523 trays.
2521-RF
PKG: 12 PKGS.
MIN. ORDER: 12 PKGS.
UPC: 051138-36415
Ribbon Fusion Splice Insert, 2 Pack
Holds five ribbon fusion splices in each insert, used in 2522/2523 trays. Accommodates double
ceramic rod 8 to 12 fiber mass fusion sleeves.
2521-F-A
PKG: 24 PKGS.
MIN. ORDER: 24 PKGS.
UPC : 051115-26074
Single Fusion Splice Insert with Adhesive, 2 Pack
Holds 12 single fusion splices in each insert, used in 3M™ Fiber Splice Organizer Trays
2527/2532. 3.0 mm x 60 mm single fusion heat shrink sleeve required (2170 or equivalent).
2521-FL-A
PKG: 24 PKGS.
MIN. ORDER: 24 PKGS.
UPC : 051115-26046
Ribbon Fusion Splice Insert with Adhesive, 2 Pack
Holds six Fibrlok or mass fusion splices in each insert, used in 2527/2522 trays.
Accommodates single ceramic rod 12 fiber mass fusion sleeves or double ceramic rod
4 to 6 fiber mass fusion sleeves.
2522
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC: 051138-36522
Small Fiber Splice Organizer Tray
Holds two 3M™ Splice Inserts 2521 family.*
The 2522 tray stores and protects single and mass, mechanical and fusion splices. The 2521
family splice inserts are easily added to secure splices into the trays. Fibers are routed into the
trays using 3M™ Transition Tubing 2520 that zips over the fibers.
*Splice inserts must be ordered separately.
2522-24-SF
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-19149
Small Fiber Splice Organizer Tray, 24SF
Holds 24 single fusion splices.
3.0 mm x 60 mm single fusion heat shrink sleeve required (2170 or equivalent).
2523
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC: 051138-36523
Large Fiber Splice Organizer Tray
Holds four 2521 family splice inserts.*
The 2523 tray stores and protects discrete and mass, mechanical and fusion splices. The 2521
inserts are easily added to secure splices into the trays. Fibers are routed into the trays using
2520 tubing that zips over the fibers.
*Splice inserts must be ordered separately.
2523-48-SF
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-19145
Large Fiber Splice Organizer Tray, 48SF
Holds 48 single fusion splices.
3.0 mm x 60 mm single fusion heat shrink sleeve required (2170 or equivalent).
18
3M™ Fiber Optic Splice Closure 2178 Accessories
SPLICE TRAYS (CONTINUED)
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
2524
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051138-11514
3M™ Fibrlok™ Splice Organizer Tray
Holds 24 3M™ Fibrlok™ Splices and eight buffer tubes.
The 3M™ Fibrlok™ Splice Organizer Tray 2524 holds 24 Fibrlok splices. The 2524 tray can be adapted for
fusion splice storage using the 2524F tray insert. Buffer tubes are secured with channel snaps so
that cable ties are not required. The fibers all enter the tray in one corner eliminating the need for
figure 8’s in the fiber. An important design feature of these stackable trays is the snap-on hinge cover
on each tray. Individual trays may be accessed without disassembly of the trays above or below — and
without kinking buffer tubes.
2524-F
PKG: 24 EACH
MIN. ORDER: 24 EACH
UPC: 054007-57150
Fusion Splice Insert
Adapts the 2524 tray for fusion splices.
3.0 mm x 60 mm single fusion heat shrink sleeve required (2170 or equivalent).
2524-FT
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051138-11513
Fusion Splice Organizer Tray
Holds 24 single fusion splices.
Holds up to 24 fusion splices. Buffer tubes are secured with channel snaps so that cable ties are not
required. The fibers all enter the tray in one corner eliminating the need for figure 8’s in the fiber. An
important design feature of these stackable trays is the snap-on hinge cover on each tray. Individual
trays may be accessed without disassembly of the trays above or below — and without kinking buffer
tubes.
3.0 mm x 60 mm single fusion heat shrink sleeve required (2170 or equivalent).
2524-MF
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC: 051138-34352
Multi-Fiber Splice Organizer Tray
Holds three 3M™ Fibrlok™ Multi-Fiber and four single Fibrlok splices.
2526
PKG: 24 KITS
MIN. ORDER: 24 KITS
UPC: 051138-36648
Strap Kit for Organizer Trays
Holds splice trays in place in closure.
2527
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC: 051138-89008
Fiber Splice Organizer Tray
The 2527 tray accommodates up to 24 single fusion or 144 mass splices and has entry from
all corners. It maintains the minimum bend radius of fiber. The tray has a clear cover and splice
holders included.
3.0 mm x 60 mm single fusion heat shrink sleeve required (2170 or equivalent).
2527-48-SF
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-29953
Fiber Splice Organizer Tray
The 2527 tray accommodates up to 48 single fusion splices and has entry from all corners. It maintains
the minimum bend radius of fiber. The tray has a clear cover and splice holders included.
3.0 mm x 60 mm single fusion heat shrink sleeve required.
2532
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-16220
Fiber Splice Organizer Tray
Tray is stackable and accommodates 24 single and 72 mass fusion splices.
3.0 mm x 60 mm single fusion heat shrink sleeve required (2170 or equivalent).
2539-12-SF
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-19209
Fiber Optic Splice Tray with 12 Single Fusion Splices
Hinged tray that accommodates 12 single fusion splices. Only for 2178-XSB closures.
2.4 mm x 60 mm single fusion heat shrink sleeves required (2171 or equivalent).
2540-12-SF/36-MF
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-19210
Fiber Optic Splice Tray with 12 Single/36 Mass Fusion
Hinged tray that accommodates up to 12 single fusion and 36 mass fusion splices.
Only for 2178-XSB closures.
2.4 mm x 60 mm single fusion heat shrink sleeves required (2171 or equivalent).
2543-S-144-MF
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-06171
Fiber Optic Splice Tray Tube Entry, 144 Mass Fusion
Accommodates up to 144 mass fusion splices and has entry from all corners for standard
transition or LBT tubes.
19
3M™ Fiber Optic Splice Closure 2178 Accessories
SPLICE TRAYS (CONTINUED)
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
2543-S-24-SF-2.4MM
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-06167
Fiber Optic Splice Tray Tube Entry, 24SF 2.4MM
Accommodates up to 24 single fusion splices and has entry from all corners. The single fusion splice
inserts accommodate the 3M™ Fiber Optic Splice Sleeve 2171 or equivalent 2.4 mm x 60 mm heat
shrink sleeve.
2543-S-24-SF-3.0MM
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-06168
Fiber Optic Splice Tray Tube Entry, 24SF 3.0MM
Accommodates up to 24 single fusion splices and has entry from all corners. The single fusion splice
inserts accommodate the 3M™ Fiber Optic Splice Sleeve 2170 or equivalent 3.0 mm x 60 mm heat
shrink sleeve.
2543-T-144-MF
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-06170
Fiber Optic Splice Tray 2520 Tube Entry, 144MF
Accommodates 144 mass fusion splices. Fibers are routed into the trays using
2520-6RF tubing that zips over the fibers. The tray has entry from all corners.
2543-U-24SF-3MM/144MF
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-06169
Fiber Optic Splice Tray 2520 Tube Entry 24SF 3MM/144MF
Accommodates 24 single fusion (3.0 mm x 60 mm) or 144 mass fusion splices.
Fibers are routed into the trays using 2520-6RF tubing that zips over the fibers on one end of the tray.
Standard transition tube or LBT securing is available on the other end of the tray.
2527-1X32PLC-01-SF2-AA
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC: 051115-06060
1X32 PLC 2527 Splitter Tray Input Splicing
2527 tray with one 1x32 PLC Splitter, SM discrete 250 µm input/output fibers, with 12-splice holder.
3M™ Fiber Optic Splice Closure 2178 Accessories
EXPANSION
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
2172
PKG: 100 EACH
MIN. ORDER: 100 EACH
UPC: 051138-36612
Strength Member Clamp for Fiber Cable
Clamps strength member to cable sheath for 2178-L/S closures.
2178-LS/GSKT
PKG: 10 KITS
MIN. ORDER: 10 KITS
UPC: 051138-57929
Gasket Kit for 2178-L/S Family
Replaceable gasket kit.
2178-XLB-TOP
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC : 051115-26208
Fiber Closure 2178 XLB Top
XLB Closure Top
2178-XSB-1.4B
PKG: 5 EACH
MIN. ORDER: 5 EACH
UPC: 051115-19058
Cable Branch Port Kit for 2178-XSB and XLB
Single cable entry for 1.4" cable entry port.
2178-4PGA
PKG: 5 EACH
MIN. ORDER: 5 EACH
UPC : 051115-19057
4-Port Grommet
Compatible with most flat drop cable available. For use with all 2178 models. For use with 1.0" ports.
2178-6PGA
PKG: 5 EACH
MIN. ORDER: 5 EACH
UPC: 051115-19056
6-Port Grommet
Compatible with most flat drop cable available. For use only with the 2178-XSB, 2178-XLB,
and 2178-XL closures. For use with 1.4" ports.
2181-B
PKG: 1 KIT
MIN. ORDER: 1 KIT
UPC: 054007-17678
Double Adapter Bolt Kit
Contains bolts for installation of two 3M™ Cable Addition Kits 2181-LS or 2181-LS/FR.
2181-C
PKG: 1 KIT
MIN. ORDER: 1 KIT
UPC: 054007-92597
Triple Adapter Bolt Kit
Contains bolts for installation of three 2181-LS or 2181-LS/FR cable addition kits.
2181-LS
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC: 051138-57927
Cable Addition Kit
Contains gasket and materials for installing additional cables. For use with 2178-L/S family closures.
2181-LS/FR
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC: 051138-75414
Cable Addition Kit, Flame Retardant
Contains gasket and materials for installing additional cables and is flame retardant. For use with 2178-L/S
fire retardant closures.
2181-XL/CAK
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC:051138-88928
Cable Addition Kit for 2178-XL
Contains gasket and materials for installing additional cables. For use with 2178-XL closure.
2181-XL/FR-CAK
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC : 051115-26124
Cable Addition Kit for 2178-XL
Contains gasket and materials for installing additional cables. For use with 2178-XL/FR flame retardant
closure.
2181-XB
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC : 051115-262104
Cable Addition Kit for 2178-XB
Contains gasket and materials for installing additional cables. For use with 2178-XSB
and -XLB closures.
2181-XB/FR
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC : 051115-53466
Cable Addition Kit for 2178-XSB/FR & 2178-XLB/FR
Cable addition kit for the 2178-XLB/FR and 2178-XSB/FR Closures. Allows for the addition of
3 cable ports. Contains three cable entry hardware kits.
20
3M™ Fiber Optic Splice Closure 2178 Accessories
EXPANSION (CONTINUED)
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
2178-LS-CSB-SMC-BRKT
PKG: 10 EACH
MIN. ORDER: 10 EACH
UPC : 051115-26203
Cable Strain Relief Bracket
Contains materials for installing additional cables. For use with 2178-L/S family of closures.
2178-1.0-PORT-CRPX
PKG: 5 EACH
MIN. ORDER: 5 EACH
UPC : 051115-26153
Cable Grommet for Corning RPX Cable
To be used in the 2178 1.0" cable entry port.
2178-XL/XSB-FR-3PG-0.52
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-26248
Flame Retardant 3-Port 0.52" Grommet
This grommet can only be used with the 2178-XSB/FR, 2178-XLB/FR and 2178-XL/FR closures.
For use with 1.4" port only.
2178-XL/XSB-FR-2PG-0.60
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-22807
Flame Retardant 2-Port 0.60" Grommet
This grommet can only be used with the 2178-XSB/FR, 2178-XLB/FR and 2178-XL/FR closures.
For use with 1.4" port only.
GROUNDING
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
2178-EGI
PKG: 5 EACH
MIN. ORDER: 5 EACH
UPC: 051138-57930
External Ground Isolation Kit
Provides a means to ground each cable shield with waterproof isolation. The 2178-EGI housing
can be used with any 2178 closure utilizing the 1.0" port. Contents: two 2178-EGI housing assemblies and
caps, two ground wire assemblies, two O-rings, two bolts and two 4460-D/FO shield bond connectors.
25T-BBE6
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC: 054007-32671
Bond Braid
With 6" eyelets.
4460-D/FO
PKG: 100 EACH
MIN. ORDER: 100 EACH
UPC: 054007-92757
3M™ Scotchlok™ Shield Bond Connector Assembly
Provides grounding and strength member clamp for armored fiber cables.
21
3M™ Fiber Optic Splice Closure 2178 Accessories
2178 CLASSIC
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
2178-125
PKG: 8 EACH
MIN. ORDER: 8 EACH
UPC: 054007-91019
Mastic Sealing Tape, Re-enterable
For use only with 2178 classic closures.
2178-281
PKG: 14 EACH
MIN. ORDER: 14 EACH
UPC: 051138-58633
CORD Re-enterable Mastic
For use only with 2178 classic closures.
2180
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC: 054007-17533
Cable Kit
All materials required for re-entry into 2178 splice closure. Includes plugs, washers and sealing materials
(mastic tape and cord). Contents: two plugs, two hose clamps, four green cable ties, four blue cable ties,
one hex key, 48 sealing washers, one box sealing cord and one box sealing tape.
For use only with 2178 classic closures.
2181
PKG: 1 EACH
MIN. ORDER: 1 EACH
UPC: 051138-89321
Cable Addition Kit
Contains mastic, cable adapter and materials for installing additional cables in 2178 and 2178-G splice clo-
sures. This kit permits butt splicing after initial plant construction.
Contents: cover, cable adapter, three plugs, four hose clamps, four green cable ties, four blue cable ties, one
spacer clamp assembly, one box sealing cord, one box sealing tape, ten bolts and eight sealing washer trees.
For use only with 2178 classic closures.
MOUNTING HARDWARE
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
2183-UHB
PKG: 1 KIT
MIN. ORDER: 1 KIT
UPC: 051138-34602
Universal Aerial Hanger Bracket Kit
Hardware for aerial installation of the 2178-LS family splice closures (S, SL, LS, LL). The kit also
accommodates the 2178 splice closure with one or two 3M™ Cable Addition Kits 2181. Contents:
four nylon stop nuts, two corner inserts with studs, two universal hanger bracket assemblies.
2184
PKG: 10 KITS
MIN. ORDER: 10 KITS
UPC: 05115-19470
Adjustable Aerial Hanger Bracket Kit
Adjustable aerial hanger bracket kit for the 2178-XSB, 2178-XLB, 2178-S, 2178-LS, and 2178-SL clo-
sures.
2184-LL
PKG: 10 KITS
MIN. ORDER: 10 KITS
UPC : 051115-25984
Aerial Offset Hanger Bracket Kit Lightlinker
3M™ Aerial Offset Hanger Bracket 2184-LL is designed to work with the 3M™ Fiber Splice Closure
System LL Series and the 3M™ Fiber Optic Splice Closure 2178-XL.
2197
PKG: 1 KIT
MIN. ORDER: 1 KIT
UPC: 054007-92222
Aerial Hanger Bracket Kit
Contains hardware for aerial installation with hinged cover.
For 2178-L/S family splice closures (S, SL, LS, LL). The kit also accommodates the 2178 splice closure
with one or two 2181 cable addition kits. It provides additional hardware to attach the splice closure cover
to its base. Contents: six corner inserts, 12 nuts, two flexible hinges, two “L” brackets, two bonding/hanger
brackets and two bolts with washers.
2198
PKG: 1 KIT
MIN. ORDER: 1 KIT
UPC: 051138-36613
Wall Mount Bracket
For use with 2178-XSB, 2178-XLB, 2178-S, 2178-SL, 2178-LS and XL fiber closures.
2199
PKG: 1 KIT
MIN. ORDER: 1 KIT
UPC: 051138-57928
Wall Mount Bracket
For use with 2178-S, LS and LL fiber closures.
22
3M™ Fiber Optic Splice Closure 2178 Accessories
MOUNTING HARDWARE (CONTINUED)
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
AC-HB4
PKG.(LBS.): 10 SETS (4.00)
MIN. ORDER: 10 SETS
UPC : 051115-19068
Aerial Offset Hanger Bracket, 4.0"
For overlashing application.
2178-S/LS-OPGW
PKG: 2 EACH
MIN. ORDER: 2 EACH
UPC : 051115-06019
OPGW Cable Bracket
For use with 2178-S and 2178-LS fiber closures.
GENERAL
PRODUCT NUMBER/
PACKAGING INFO DESCRIPTION
2178-XB/XL-T-INSERT-G
PKG: 10 EACH
MIN. ORDER: 1 PACK
UPC : 051115-06082
Plastic Threaded Inserts
Threaded inserts for the 2178-XSB, XLB, XL splice closures.
2178-L/S-T-INSERT
PKG: 10 EACH
MIN. ORDER: 1 PACK
UPC : 051115-22714
Stainless Steel Threaded Inserts
Threaded inserts for the 2178-S, SL, LS and LL splice closures.
2178-L/S-T-INSERT-G
PKG: 10 EACH
MIN. ORDER: 1 PACK
UPC : 051115-06083
Plastic Threaded Inserts
Inserts for 2178-S, SL, LS, LL splice closures.
2178-L/S-375-BOLTS
PKG: 10 EACH
MIN. ORDER: 1 PACK
UPC : 051115-22715
Cable Addition Replacement Bolts
Bolts used with a single 2181-LS cable addition kit.
2178-L/S-248-BOLTS
PKG: 10 EACH
MIN. ORDER: 1 PACK
UPC : 051115-22716
Standard Closure Bolts
Bolts for the 2178-S, LS, LL, XSB, XLB and XL splice closures.
4415
PKG: 10 KITS
MIN. ORDER: 10 KITS
UPC: 054007-57219
Cable Cleaning Kit
Provides all the necessary materials for cleaning the filling compound from filled copper and fiber optic
cables in an easy-to-transport kit.
5005-KIT
PKG: 1 KIT
MIN. ORDER: 1 KIT
UPC: 0-00-54007-56488-1
Reflective Lettering System Kit
Each kit contains 25 each A-Z, 0-9, blank and dash characters packaged in a clear,
36-compartment box, including an application tool.
2178-2T-LL-CLTK
PKG: 1 EACH
MIN. ORDER: 1 KIT
UPC : 051115-22808
Tool Kit with Torque Wrench
Kit includes sockets, extension and torque wrench.
23
Note: The deeper base of the 2178-SL and 2178-LL closures provides for additional slack storage for buffer tubes and ribbons.
The 2181 Cable Addition Kits can be used to increase splice capacity or port capacity.
Maximum splice capacity varies per the splice tray selected for each closure.
3M™ Fiber Optic Splice Closure 2178 Configurations
FEATURES 2178-XSB 2178-XLB 2178-S 2178-S4 2178-S6 2178-SL 2178-LS 2178-LS4 2178-LS6 2178-LL 2178-LL4 2178-XL
CABLE ENTRY PORTS & SIZE
INLINE 0 0 4 8 12 44812488
BUTT 3 3 2 4 6 2 2 4 6 2 4 4
SIZE -
INCHES (MM)
2 - 1.0" (25 mm)
1 - 1.4" (35 mm)
2 - 1.0" (25 mm)
1 - 1.4" (35 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
4 - 1.0" (25 mm)
4 - 1.4" (35 mm)
SPLICE CAPACITY (MAXIMUM) AND TRAY INFORMATION
SINGLE FUSION 72 96 96 96 96 96 288 288 288 288 288 576
MASS FUSION 288 432 288 288 288 288 864 864 864 864 864 1728
TRAYS
*Most Popular
2532*
2539
2540
2532*
2539
2540
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2527
2543
BONDING & GROUNDING
# OF GROUND LUGS 0, 2, 3 or 6 0, 2, 3 or 6 0, 2, or 4 0, 2, or 4 0, 2, or 4 0, 2, or 4, 8 0, 4, or 8
DIMENSIONS (INCHES)
LENGTH 14.6" (370 mm) 14.6" (370 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 1.9" (556 mm) 27.0" (660 mm)
WIDTH 10.1" (257 mm) 10.1" (257 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 13.3" (337 mm)
HEIGHT 4.6" (117 mm) 5.8" (147 mm) 4.7" (119 mm) 6.2" (158 mm) 7.7" (196 mm) 8.0" (203 mm) 8.0" (203 mm) 9.5" (241 mm) 11.0" (279 mm) 11.3" (287 mm) 12.8" (325 mm) 11.0" ( 279 mm)
KEY ACCESSORIES
CABLE PORT OR SPLICE CAPACITY EXPANSION 2181-XB 2181-XB 2181-LS
2181-B
2181-C
2181-LS
2181-B
2181-C
2181-LS
2181-C
2181-LS
2181-B
2181-C
2181-LS
2181-B
2181-C
2181-LS
2181-B
2181-C
2181-LS
2181-C
2181-LS
2181-B
2181-C
2181-LS
2181-B
2181-C
2181-XL/CAK
GROMMETS 2178-4PGA
2178-6PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-6PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CPRX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-6PGA
2178-1.0-PORT-CRPX
MOUNTING HARDWARE
AERIAL STRAND MOUNT 2184 2184 2183, 2184, or 2197 2183, 2184, or 2197 2183, 2184, or 2197 2183 or 2197 2184-LL
MANHOLE 2198 2198 2198 2198 2198 2198 2198
HANDHOLE 2198 2198 2198 2198 2198 2198 2198
AERIAL POLE MOUNT 2198 2198 2198 2198 2198 2198 2198
WALL MOUNT 2198 2198 2198 or 2199 2198 or 2199 2199 2199 2198
FLAME/FIRE RETARDANT SOLUTION (UL LISTED*)
PRODUCT 2178-XSB/FR*
2181-XB/FR*
2178-XLB/FR*
2181-XB/FR*
2178-S/FR*
2181-LS/FR*
2178-S4/FR
2181-LS/FR*
2178-S6/FR
2181-LS/FR*
na 2178-LS/FR*
2181-LS/FR*
2178-LS4/FR
2181-LS/FR*
2178-LS6/FR
2181-LS/FR*
2178-LL/FR*
2181-LS/FR*
2178-LL4/FR
2181-LS/FR*
2178-XL/FR*
2178-XL/CAK-FR
24
3M™ Fiber Optic Splice Closure 2178 Configurations
FEATURES 2178-XSB 2178-XLB 2178-S 2178-S4 2178-S6 2178-SL 2178-LS 2178-LS4 2178-LS6 2178-LL 2178-LL4 2178-XL
CABLE ENTRY PORTS & SIZE
INLINE 0 0 4 8 12 44812488
BUTT 3 3 2 4 6 2 2 4 6 2 4 4
SIZE -
INCHES (MM)
2 - 1.0" (25 mm)
1 - 1.4" (35 mm)
2 - 1.0" (25 mm)
1 - 1.4" (35 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
1.0"
(25 mm)
4 - 1.0" (25 mm)
4 - 1.4" (35 mm)
SPLICE CAPACITY (MAXIMUM) AND TRAY INFORMATION
SINGLE FUSION 72 96 96 96 96 96 288 288 288 288 288 576
MASS FUSION 288 432 288 288 288 288 864 864 864 864 864 1728
TRAYS
*Most Popular
2532*
2539
2540
2532*
2539
2540
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2524
2527
2543
2522*
2523
2527
2543
BONDING & GROUNDING
# OF GROUND LUGS 0, 2, 3 or 6 0, 2, 3 or 6 0, 2, or 4 0, 2, or 4 0, 2, or 4 0, 2, or 4, 8 0, 4, or 8
DIMENSIONS (INCHES)
LENGTH 14.6" (370 mm) 14.6" (370 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 21.9" (556 mm) 1.9" (556 mm) 27.0" (660 mm)
WIDTH 10.1" (257 mm) 10.1" (257 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 8.5" (216 mm) 13.3" (337 mm)
HEIGHT 4.6" (117 mm) 5.8" (147 mm) 4.7" (119 mm) 6.2" (158 mm) 7.7" (196 mm) 8.0" (203 mm) 8.0" (203 mm) 9.5" (241 mm) 11.0" (279 mm) 11.3" (287 mm) 12.8" (325 mm) 11.0" ( 279 mm)
KEY ACCESSORIES
CABLE PORT OR SPLICE CAPACITY EXPANSION 2181-XB 2181-XB 2181-LS
2181-B
2181-C
2181-LS
2181-B
2181-C
2181-LS
2181-C
2181-LS
2181-B
2181-C
2181-LS
2181-B
2181-C
2181-LS
2181-B
2181-C
2181-LS
2181-C
2181-LS
2181-B
2181-C
2181-LS
2181-B
2181-C
2181-XL/CAK
GROMMETS 2178-4PGA
2178-6PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-6PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CPRX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-1.0-PORT-CRPX
2178-4PGA
2178-6PGA
2178-1.0-PORT-CRPX
MOUNTING HARDWARE
AERIAL STRAND MOUNT 2184 2184 2183, 2184, or 2197 2183, 2184, or 2197 2183, 2184, or 2197 2183 or 2197 2184-LL
MANHOLE 2198 2198 2198 2198 2198 2198 2198
HANDHOLE 2198 2198 2198 2198 2198 2198 2198
AERIAL POLE MOUNT 2198 2198 2198 2198 2198 2198 2198
WALL MOUNT 2198 2198 2198 or 2199 2198 or 2199 2199 2199 2198
FLAME/FIRE RETARDANT SOLUTION (UL LISTED*)
PRODUCT 2178-XSB/FR*
2181-XB/FR*
2178-XLB/FR*
2181-XB/FR*
2178-S/FR*
2181-LS/FR*
2178-S4/FR
2181-LS/FR*
2178-S6/FR
2181-LS/FR*
na 2178-LS/FR*
2181-LS/FR*
2178-LS4/FR
2181-LS/FR*
2178-LS6/FR
2181-LS/FR*
2178-LL/FR*
2181-LS/FR*
2178-LL4/FR
2181-LS/FR*
2178-XL/FR*
2178-XL/CAK-FR
25
26
27
*RoHS 2011/65/EU” means that the product or part does not contain any of the substances in excess of the maximum concentration values (“MCVs”) in EU RoHS
Directive 2011/65/EU. The MCVs are by weight in homogeneous materials. This information represents 3M’s knowledge and belief, which may be based in whole or in
part on information provided by third party suppliers to 3M.
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Fax 800/626 0329
www.3Mcom/Telecom
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3M, Fibrlok and Scotchlok are trademarks of 3M Company. All other trademarks are owned by their respective companies.
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Before using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all risks and liability associated with such use. Any statements related
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in writing, by an authorized officer of 3M.
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This product will be free from defects in material and manufacture for a period of 12 months from the time of purchase. 3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED
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