Prime-Line D 1509 Prime-Line Concave Edge Sliding Door Assembly, 1-1/4 in Diameter X 5/16 in W, 1 Roller Product Description 1-1/4 In. steel ball bearing roller with adjustable steel housing assembly. Used by Sun Valley, Full view, Glascock and other glass door manufacturers. Housing dimensions: thickness, 9/16 In.; length, 1-9/32 In.; height, 1-9/32 Ft.; overall thickness, 5/8 From the Manufacturer 1-1/4 In. steel ball bearing roller with adjustable steel housing assembly. Used by Sun Valley, Full view, Glascock and other glass door manufacturers. Housing dimensions: thickness, 9/16 In.; length, 1-9/32 In.; height, 1-9/32 Ft.; overall thickness, 5/8 Features Used by Sun Valley, Fullview, Glasco and a variety of other metal sliding patio door manufacturers When the corner screw passes through the F-tab the assembly is captured by the side stile and bottom rail as the screw draws the two sides together Rear adjustment screw Stamped steel housing with a ball bearing rollers 1-1/4 in. concave steel roller Replaces old style F style assemblies that slid into an extruded channel in the bottom rail USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.