This is a tension spring roller assembly has a V-shaped tension spring design that is used by a variety of patio door manufacturers. The roller is a 1 in. high density polyethylene roller mounted on the end of a heat treated steel tension spring that is V-shaped. The 2 in. long V-shaped flat spring inserts into the screen frame giving tension required as the door slides back and forth.
Used by a variety of sliding patio door manufacturers
2 in. V-shaped tension spring
1 in. diameter concave roller
Heat treated tension spring and nylon ball bearing roller
