Tandem roller assembly, Most commonly used with vinyl sliding patio doors.

This sliding patio door roller has two 1-1/2 inch (31.8 millimeter) diameter steel ball bearing rollers.
The steel housing assembly is 11/16 inches (17.5 millimeters) wide and 1 inch (25.4 millimeters) tall.

Housing Tab Style: Plain Back w/ Top Tab
Top Tab Position: 1.99 inches
Housing Width: 11/16-inch
Housing Height: 1 inch
Roller Diameter: 1-1/2-inch
Wheel Bearings: Steel
Roller Edge Type: Concave
Roller Material: Steel
Contents: 1 roller assembly, Priced and sold each.

NOTE: There are 3 possible tab positions - See additional images

Related Parts:
13263 - Same Roller without tab - No tab