Prime-Line B 541 1 In. Sliding Screen Door Tension Spring with Concave Plastic Rollers (2 Pack)

Used on Columbia and Uni-Fit series doors, Installs by snapping onto the existing diecast door frame corner, 1 inch diameter concave plastic roller, Body and tension spring of the roller assembly is stamped steel with a polyethylene roller, Please refer to the line art drawing and compare with your needs item before purchasing (Not Universal)