How to Get the Right Size Garage Door Spring

Choose the correct size garage door spring for a garage door. How to measure an extension spring, choose the color code for the weight of the door and learn about the different types of garage door spring ends.

Link to video: How to Replace a Garage Door Extension Spring    • Replace a Garage Door Extension Spring  

Link to video: How to Weigh a Garage Door:    • How to Weigh a Garage Door  

Extension spring information:

25"X42" spring - 25 inches is the length of the spring, measured compressed, coil to coil. 42 inches is half of the height of the door.

Color code-door weight-pounds

White 10, 110, 210 lbs
Green 20, 120, 220 lbs
Yellow 30, 130,230 lbs
Blue 40, 140, 240 lbs
Red 50, 150, 250 lbs
Brown 60, 160,260 lbs
Orange 70,170, 270 lbs
Gold 80, 180, 280 lbs
Light Blue 90, 190, 290 lbs
Tan 100, 200, 300 lbs


Door Heights - Spring Length - Coil to Coil

6 foot door – 21 inch spring
6 foot 6 inch door – 25 inch spring
7 foot door –25 inch spring
27 inch spring
32 inch spring
8 foot door – 27 inch spring
29 inch spring
30 inch spring
32 inch spring
9 foot door – 36 inch spring
39 inch spring

Spring Ends

Open Loop - Single loop with open end - easier to replace, not as strong as other ends

Double Loop - Double loop with closed loops, stronger than open loop.

Clipped Ends - Most durable, less stress on spring end, found on higher weight rated springs.

It's important to select the proper extension springs for the weight of your garage door. Most people don't know how to choose the right replacement garage door spring or that there is even a difference in garage door replacement springs.

The most reliable way is to measure the weight of the garage door with a bathroom scale, though you'll want to use an old spring style scale for the most accurate weight. You can also look for label for the garage door model or weight. You also might find the door weight or correct spring size in the installation instructions.

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#garagedoorsprings