Prime-Line Products D 1541 Prime Line D1541 Concave Edge Sliding Door Assembly, 1-1/4 in Dia X 5/16 in W, 1 Roller, quot 1-1/4in. Steel ball bearing roller Used by Bloomberg and other glass door manufacturers Housing Dimensions: W: 11/16in. L: 2-3/8in. H: 1-1/4in. Overall thickness 13/16in. Hole on top of housing is 10/32 machine threaded