LiftMaster Sprocket, 40B18T, 1-1/4"B | LIF-15-40B18QJH 33 ft arm you can easily communicate with

you can easily communicate with visitors at your door and let them in without having to leave your house

The units can freeze in the up position and cause unintended damage or injury due to the inability of the spikes to retract

Identify (m): 9

Separate torque adjustment for opening and closing

delivering long-lasting durability in all weather conditions

LiftMaster Sprocket, 40B18T, 1-1/4"B | LIF-15-40B18QJH 33 ft arm you can easily communicate withLiftMaster Sprocket, 40B18T, 1 1 4"B LIF 15 40B18QJH This is a replacement Sprocket (40B18T, 1 1 4"B) for use with various LiftMaster Commercial Door Operators. Genuine LiftMaster replacement part.