The P328 28 in. Plug-End Extension Spring is a Holmes spring replacement for heavier one piece garage doors as well as for toy hauler doors. 2 x P328 springs can handle up to a 250 lb. door. Connect the spring(s) to jamb or door attachment (usually a chain or U-bolt) with a C-Hook or a W-Hook.
- 2 x P328-C springs support 125 lbs. to 250 lbs. garage doors
- Length over coils: 28 in.
- Outside diameter: 2 in.
- Wire gauge: (0.244) #3
- Initial tension: 165-185
- Maximum allowable stretch: 18.5 in.
- Manufacturer warranty: 1-year