Extension Springs
Covers how to choose and measure the correct extension springs based on door weight and color coding. Explains how these springs work, the purpose of different end types, and when to replace both for balanced operation.
To order the right replacement, you will need the height and weight of your garage door. Extension springs are color coded, but those colors repeat every 10...
Thu, 23 Oct, 2025 at 12:27 PM
The painted tip shows the weight rating for your spring. Because colors repeat every 100 pounds, always confirm with the actual door weight or measurements ...
Thu, 23 Oct, 2025 at 12:34 PM
Extension springs stretch when the door is closed and release stored energy when the door opens. They mount along both sides of the door and connect to cabl...
Thu, 23 Oct, 2025 at 12:35 PM
Weighing the door is the most reliable way to match the correct spring. Disconnect the opener and secure the door fully open. Remove the extension spring...
Thu, 23 Oct, 2025 at 12:35 PM
End style affects durability and use case. Single loop: easiest to replace, common up to 200 lb doors; ends wear faster. Double loop: stronger than singl...
Thu, 23 Oct, 2025 at 12:35 PM
Replace extension springs in pairs. Both springs share the load, and even if only one broke, the other has stretched and fatigued. Replacing both keeps the ...
Thu, 23 Oct, 2025 at 12:35 PM