This is a tension spring roller assembly with a V shaped spring design is used by several patio door manufacturers. The roller is a 1 in steel ball bearing roller with a heat-treated steel tension spring that is V shaped. The 2 in L V shaped flat spring inserts into the screen frame giving tension required as the door slides back and forth.
|Roller Diameter||1 In|
|Roller Width||1/4 In|
|Suitable For||Several Patio Screen Doors|