4 Pack Sliding Screen Door Tension Spring Fits for KDEX20 Series Doors, Replaces KDEX20R-XCP4 Used on Both Top and Bottom, 1-1/4" Concaved Steel Ball Bearing

Compatible with KDEX20 series doors as well as a variety of other sliding screen door manufacturers for replacing similar spring tension rollers. | It has a arch wire tension spring and comes with a 1-1/4" steel ball bearing roller. | Installs by snapping onto the existing door frame corner insert B 569 or KDEX20C. | 4 pack included used on the top and the bottom of the sliding screen door, we recommend replacing all 4 rollers on single door panel at the same time.