Unscrewed 2 screws on the inside of the door mullion. Took off 3 caps that protect the hinges, Lifted the mullion door just enough to allow you to put the spring in the slots on the bottom of the door. Super easy and was able to repair the mullion door with just purchasing the spring. Important to know how many coils in the spring. We purchased the wrong one initially with 5 coils and needed the 6 coils.