Ensure smooth, safe, and reliable garage door operation with these high-quality extension springs designed for standard 7-foot high residential garage doors. Each spring measures 25" in relaxed length and stretches up to 42" under load.
Rated for doors weighing 40–380 lbs., these extension springs act as a counterbalance system, helping offset the door’s weight and reducing strain on cables and the garage door opener for safer, easier operation.
Each spring features double-looped ends for secure attachment to the stationary ceiling bracket and pulley/safety cable assembly, providing dependable and stable performance.
Important: Springs are sold as a pair
Key Features
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25" relaxed length x 42" maximum stretch
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Designed for standard 7-foot high residential garage doors
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Weight ratings available from 40–380 lbs
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Double-looped ends for secure and reliable attachment
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Durable construction for long-lasting performance
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Sold as a pair for balanced operation
Installation Recommendations
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Always replace both springs at the same time to maintain proper door balance.
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Select the correct weight rating from the drop-down menu to match your garage door.
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Follow your door manufacturer’s installation instructions and safety guidelines. Professional installation is recommended.
DASMA Spring Color Codes (Weight Rating Per Spring)
40 lbs – Blue
50 lbs – Red
60 lbs – Brown
70 lbs – Orange
80 lbs – Gold
90 lbs – Light Blue
100 lbs – Tan
110 lbs – White
120 lbs – Green
130 lbs – Yellow
140 lbs – Blue
150 lbs – Red
160 lbs – Brown
170 lbs – Orange
180 lbs – Gold
190 lbs – Light Blue
200 lbs – Tan
210 lbs – White
220 lbs – Green
230 lbs – Yellow
240 lbs – Blue
250 lbs – Red
260 lbs – Brown
270 lbs – Orange
280 lbs – Gold
290 lbs – Light Blue
300 lbs – Tan
Ideal For: Residential 7-foot garage doors requiring dependable replacement extension springs for smooth, balanced, and safe operation.
