LiftMaster 3950 3950 Manual - Page 4

Carton Inventory Your door operator is packaged in one carton which contains the motor unit and the parts illustrated below. Note that accessories will depend on the model purchased. If anything is missing, carefully check the packing material. 2-Conductor Bell Wire White & White/Red Mounting Bracket (4) Operator Door Sprockets Safety Labels and Literature Hardware Inventory Installation Hardware Tubular Spacer 1/2" (6) Tubular Spacer 2" (3) Cap Screw 1/4"-20 x 2" (1) Nylock Lock Nut 1/4"-20 (1) Hex Head Bolt 3/8"-16 x 4" (3) Flat Washer 3/8" (3) Serrated Flange Nut 5/16"-18 (3) Carriage Head Bolt 1/4"-20 x 1/2" (2) Single Button Control Station Safety Reversing Sensor Bracket (2) 12 Tooth Drive Sprocket with Drive Chain The Protector System® (2) Safety Reversing Sensors (1 Sending Eye and 1 Receiving Eye) with 2-Conductor White & White/Black Bell Wire attached Self Taping Screw #10-32 (8) Rope (1) Handle (1) Wing Nut 1/4"-20 (2) Hex Drive Round Head Bolt 1/4"-20 x 1/2" (2) Warning Tag for Release Handle (1) 4