P728 28 in. Plug-End Extension Spring (0.177 in. No. 7 Wire), E900 Hardware, Mfr#: P728

P728 28 in. Plug-End Extension Spring is a spring replacement for 1-piece / tilt-up / canopy-style garage doors. Two P728 springs – one on each side of the door – can handle a 90 lbs. to 150 lbs. door, with an initial tension of 110 lbs. to 120 lbs. Four P728 springs – two on each of the door – can handle a 150 lbs. – 300 lbs. door. Either 4 c-hook’s or 4 w-hook’s (sold separately) are required to connect the springs to the jamb hardware.