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Replacement Safety Sensor
The square rail trolley is used for travel on the garage door opener rail and connects the door arm to the chain drive mechanism
enhancing your kitchen workflow
connect the garage door to the garage door opener trolley
These style brackets are used on most sectional garage doors
Garage Door Extension Spring For 7'Ft.- 140 lbs Dark Blue SHOP BY SPRING SIZE_225-1-3/4-29 Replacement Safety SensorGarage Door Extension Springs for 7' High Single Loop Professional high tensile steel, Rated 10,000 Cycles 25" relaxed; will stretch to 42" Note: These springs are for use on standard sectional doors only, The only way to get the proper extension spring is by door weight.. we recommend using a bathroom scale to weigh the door before ordering.. we cannot tell you what your door weighs from a description of the door
