This pair of 60 by 84 inch extension springs is made for 14-foot garage doors with double loop ends. Choose the door weight option that matches the actual weight of your door so the springs can balance the door correctly. The double loop end style is a common choice when the door setup calls for a looped connection on both sides of the spring. These springs are intended for doors that already use an extension spring system, and replacing both sides as a pair helps the door move more evenly.