David S Manlius , NY March 11, 2019 Broken spring and spring contact area on door mullion The spring on our door mullion broke off one leg, and in the process broke away the plastic rings that secure it on the mullion. The replacement mullion came complete with a spring and installed in four minutes start to finish. 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes