This Patio Screen Door Spring Tension Roller has a curved, heat-treated, high-tension, 2-3/4 inch (70 millimeter) steel spring housing with a 1/4 inch (6.4 millimeter) wide nylon wheel. This sliding patio screen door roller is used by several patio door manufacturers.

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Roller Material: Nylon

Roller Outside Dimension: 1"

Roller Profile: Concave

Roller Width: 1/4"

Spring Length: 2-3/4"