- How do I know this spring fits my door?
- It is made for 8-foot-high doors and rated at 140 lb of pull. Match the DASMA blue color code on your old spring and the door's weight rating before buying.
- Is one spring enough for my door?
- This listing is one spring. Many garage doors use two extension springs, so check your door and replace both at the same time if it uses a pair.
- How long should the spring last?
- It is rated for a minimum of 10,000 cycles. One cycle is one open and close, so a door used a few times a day lasts years.
- What is the stretch range?
- The spring stretches between 27 and 48 inches. Set the door's travel so the spring stays within that range.
- Do I need safety cables?
- Yes. Extension springs should always be run through safety cables so a broken spring is contained. They are not included.
- Can I install it myself?
- Replacing extension springs is less hazardous than torsion springs, but the springs are under tension. If you are unsure, have a garage door technician do it.
- Where is the 140 lb. Garage Door Extension Spring- 8' Door cheapest?
- At Home Depot, for $22.46, 17% under what the other stores charge, as of our latest check.
- Where can I buy the 140 lb. Garage Door Extension Spring- 8' Door?
- 4 stores we checked sell it, including American Garage Door Supply, Home Depot, eBay, Amazon.