Prime-Line 1-1/4 in. Nylon Ball Bearing Sliding Door Roller Assembly (Single Pack)

This is a F-tab patio door roller assembly with a 1-1/4 in. concave Plastic ball bearing roller. 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. The housing is 9/16 in. wide with a 3/4 in. flare, 1-1/16 in. tall and a rear adjusting screw. Used by King mirror and a variety of other patio door manufacturers.