Standard Extension Spring Garage Door
Add 2 inches 50 mm if you plan to install an electric door opener.
Standard extension spring garage door. Plug end extension spring the holmes hally p730 30 in. Extension springs run parallel to the tracks of the door and are typically situated between the tracks and the garage ceiling. Plug end extension spring is a p528 28 in. Ideal security garage door extension springs are designed for standard 7 high garage doors.
Plug end extension spring is a holmes spring replacement for heavier 1 piece tilt up canopy style garage doors. Door with an initial tension of 110 lbs. The installation of safety cables is strongly recommended with this system. Starting with our easy to use selection tool you can easily find the garage door extension springs you are looking for the 1st time.
The holmes hally p730 30 in. Our springs are original equipment quality made to last for many years. Two p528 springs one on each side of the door can handle a 105 lbs. This spring system is installed over the two horizontal tracks.
Extension springs store energy by extending while the door is closing and then releasing the stored energy while the door is opening. Plug end extension spring is a spring replacement for 1 piece tilt up canopy style garage doors. Two p730 springs one on each side of the door can handle a 90 lbs. It needs less headroom space 8 20 cm.