LiftMaster S504AL 4ft Monitored resistive Edge Channel S50

***LIFTMASTER EDGES CAN ONLY BE USED WITH LIFTMASTER DEVICES***WILL NOT WORK WITH OTHER MANUFACTURER SENSING EQUIPMENT*** Factory Assembled Monitored Resistive Standard Edges in Aluminum Channel Ideal for swing and slide commercial and residential gate applications to protect entrapment zones. Large Profile Dimensions: 1.8" H x 1" W Large Profile Edge 4 ft. (L504AL) Large Profile Edge 5 ft. (L505AL) Large Profile Edge 6 ft. (L506AL) Small Profile Dimensions: 1.2" H x 1" W Small Profile Edge 4 ft. (S504AL) Small Profile Edge 5 ft. (S505AL) Small Profile Edge 6 ft. (S506AL) Warranty: Two Years