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These are replacement extension springs for compatible 8-foot-high sectional garage doors, sold as a matched pair. Each spring is about 27 inches relaxed and rated for roughly 48 inches of extension as the door closes. Double-looped ends let them hook onto the door's track and cable hardware. They suit a DIY owner replacing a worn or broken pair on a standard 8-foot door; the key check is matching the wire gauge and door weight, since a spring rated for the wrong load will not balance the door.
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These are replacement extension springs for compatible sectional garage doors that are 8 feet high. They are sold as a pair, one for each side of the door, and help counterbalance the weight of the door.
Each spring is about 27 inches long in its relaxed position and is rated for about 48 inches of extension as the door closes. The 48 inches is the stretch beyond the relaxed length, not the spring's total length. At full rated extension, a 27-inch spring is about 75 inches long, depending on how the end loops or clips are measured.
Springs come in several door weight ratings. Choose the pair that matches the door's verified weight, not just its height, color or length. For example, a 150 lb. door needs a pair rated for 150 lb. Replace both springs together to keep the lifting force balanced, and make sure safety cables run through the springs and are securely anchored.