Finger guards o225 DC Dimensions (unit: mm) mm type Model no. Surface treatment Mass (g) 109-1137 Nickel-chrome plating (silver) 94 109-1137H Cation electropainting (black) 4.30.3 86 .9 A o1.6 o1 217.61 B o26.8 B A o194.1 19 4. 4 o213.3 .2 o1.6 o1.6 80 o1 1 Inlet side 50.5 Section AAAA -1 3.2 +0 BBBB Section Mounting example Axial fan Centrifugal fan Hexagonal nuts Fan Finger guard Hexagonal nuts Plain washers Inlet nozzle Spring washers Finger guard Screws Plain washers Fan Chassis Spring washers Screws AC