Finger guards o221 DC Dimensions (unit: mm) mm type Model no. Surface treatment Mass (g) 109-1138 Nickel-chrome plating (silver) 105 109-1138H Cation electropainting (black) 9 +0.4 4.3 - 0.2 o1.6 6.8 o192 o1.6 Mounting example o1.6 210.61.5 o2 +1 250.8 - 0.5 20 5. o245 1. 5 Inlet side 0 5.5-1 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