Used by Superlite, Fenton and a variety of other 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 ball bearing rollers. 1-1/4 inch concave roller. No flare to housing. A Phillips head screwdriver is required for installation.
