This Sliding Screen Door Spring Tension Roller assembly has an aluminum housing with a high tension steel spring, with a 7/8 inch (22.2 millimeter) O.D. nylon ball bearing wheel. The aluminum housing is 1-1/2 inches (38.1 millimeters) long, 3/8 inch (9.5 millimeter) wide and 3/4 inch (19.1 millimeter) tall. It can be used as a top or bottom roller and fits on Keller screen doors.

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Housing: Aluminum

Spring: Steel

Roller: Nylon Ball Bearing