This is an F-tab patio door roller assembly with a 1 inch concave steel ball bearing roller. When the corner screw passes through the F-tab the assembly is then captured by the side stile and bottom rail as the screw draws the two sides together. The housing is 11/16 inch wide and 1-3/16 inch tall with a 7/8 inch dimple width. Used by Lupton and a variety of other sliding patio door manufacturers.

This is two piece roller assembly used on Ador Hilite patio doors. The outer housing is 5/8 in. wide, 31/32 in. tall with a 11/32 in. flare width and has two hook tabs on top. The inner housing holds a 1-1/2 in. steel ball bearing roller. Together, they create an adjustable roller assembly that hooks into the bottom door rail and then is held in place by a 1/4-20 machine screw placed into the back end.

This is a K-tab patio door roller assembly with a 1-1/2 in. concave steel ball bearing roller. The T-shaped tab (K-tab) is simply slid up into a T shaped receptacle in the bottom of the patio door. No screws are required. The housing is 3/4 in. wide with a dimple width of 7/8 in., 1-1/4 in. tall and 2-1/4 in. long. The dimples secure it within the door's bottom frame. Used by Marshall and a variety of other sliding door manufacturers.

This is a F-tab tandem roller assembly with two steel ball bearing rollers. 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 adjustable stamped steel housing is 11/16 in. wide with a flare width of 7/8 in., 1-1/16 in. tall and 3 in. long. It has a low carriage allowing for easy door removal. Typically used by Merzon and a variety of other patio door manufacturers. Either item features 1-1/8 inch diameter rollers.

This is a plain back patio door roller assembly with a 1-1/2 in. concave steel ball bearing roller. It has a plain back housing that is 3/4 in. wide and 1-1/8 in. tall with a 13/16 in. flare. It is rear adjusting with a 1/4-20 threaded mounting hole on the back end and an optional use #10-32 threaded hole on top. It is used by Keller and a variety of other manufacturers of patio doors.