This roller assembly with M-shaped tension spring with a 1 in. steel ball bearing roller is used by a variety of patio door manufacturers. The heat treated tension spring is 2-5/16 in. long and shaped like an M, giving it the tension needed by the screen door to slide properly. Easy to install.

• Used by a variety of sliding screen patio door manufacturers
• 2-5/16 in. M-shaped tension spring
• 1 in. concave ball bearing roller
• Steel heat treated tension spring and nylon roller