Prime-Line 25 in. L Garage Door Extension Spring 70 lb.
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This extension spring replaces most 7 feet residential garage door springs. It features a 1/8 inch galvanized carbon steel cable that is installed through the spring to prevent injury in case of breakage. This spring is used on a 4 panel garage door.
Heavy duty (10,000 cycles) extension springs have double loop ends for extra durability
5 sizes will replace most all spring configurations on residential doors that are no higher than 7 feet
1/8 inch galvanized carbon steel aircraft cable
Installed through springs to prevent injury in case of breakage
Use on single car fiberglass door, 2 springs on door