This Sliding Screen Door Roller has a 5/16 inch (7.9 millimeter) wide metal housing. The center grooved steel ball bearing roller has a one inch (25.4 millimeter) diameter. This screen door roller is used by several sliding screen door manufacturers.
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Diameter Roller: 1"
Housing Length: 2-1/2"
Width: 5/16"
Height: 1/2"
Housing: Metal
Wheel: Steel Ball Bearing