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Need a different Size?
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- Pair of 21” x 36” Extension Springs for 6’ Doors – Open Loop
- Pair of 21” x 36” Extension Springs for 6’ Doors – Closed Loop
- Pair of 21” x 36” Extension Springs for 6’ Doors – Clipped Ends
- Pair of 25” x 40” Extension Springs for 6.5’ Doors – Closed Loop
- Pair of 25” x 40” Extension Springs for 6.5’ Doors – Clipped Ends
- Pair of 25” x 42” Extension Springs for 7’ Doors – Open Loop
- Pair of 25” x 42” Extension Springs for 7’ Doors – Closed Loop
- Pair of 25” x 42” Extension Springs for 7’ Doors – Clipped Ends
- Pair of 27” x 45” Extension Springs for 7.5' Doors – Open Loop
- Pair of 27” x 45” Extension Springs for 7.5’ Doors – Closed Loop
- Pair of 27” x 45” Extension Springs for 7.5’ Doors – Clipped Ends
- Pair of 27” x 48” Extension Springs for 8’ Doors – Open Loop
- Pair of 27” x 48” Extension Springs for 8’ Doors – Closed Loop
- Pair of 27” x 48” Extension Springs for 8’ Doors – Clipped Ends
- Pair of 36” x 54” Extension Springs for 9’ Doors – Open Loop
- Pair of 36” x 54” Extension Springs for 9’ Doors – Double Loop
- Pair of 36” x 54” Extension Springs for 9’ Doors – Clipped Ends
- Pair of 44” x 60” Extension Springs for 10’ Doors – Open Loop
- Pair of 44” x 60” Extension Springs for 10’ Doors – Double Loop
- Pair of 44” x 60” Extension Springs for 10’ Doors – Clipped Ends
- Pair of 48” x 66” Extension Springs for 11’ Doors – Double looped
- Pair of 53” x 72” Extension Springs for 12’ Doors – Open Loop
- Pair of 53” x 72” Extension Springs for 12’ Doors – Double Loop
- Pair of 53” x 72” Extension Springs for 12’ Doors – Clipped Ends
- Pair of 53” x 78” Extension Springs for 13’ Doors – Double Loop
- Pair of 60” x 84” Extension Springs for 14’ Doors – Double Loop
- Pair of 60” x 84” Extension Springs for 14’ Doors – Clipped Ends
Extension spring pair, 48 by 66 inches, for 11-foot-high garage doors. These handle doors from roughly 80 to 350 pounds depending on the specific spring within this size range. Extension springs go alongside the horizontal tracks on either side of the door and stretch to counterbalance the door's weight. When they're worn out, you'll notice the door is hard to open or the opener strains on the way up. Replace both springs, not just one, to keep the door balanced. Some sizes in this range may need extra lead time, so reach out before you order. Verify your door's actual height and weight first.