This is a unique housing tandem roller assembly used by a variety of manufacturers of sliding patio doors. It has two 1-1/4 inch concave or grooved steel ball bearing rollers set in line in a stamped steel housing with end adjustment . The square shaped housing is 1-1/2 inch tall, 11/16 inch wide and 4-1/2 inch long with two mounting tabs at each end of the housing. When the housing is inserted into the mortised area in the bottom rail, screws are used to fasten it in place.em roller assembly used by a variety of manufacturers of sliding patio doors. It has two 1-1/4 inch concave or grooved steel ball bearing rollers set in line in a stamped steel housing with end adjustment . The square shaped housing is 1-1/2 inch tall, 11/16 inch wide and 4-1/2 inch long with two mounting tabs at each end of the housing. When the housing is inserted into the mortised area in the bottom rail, screws are used to fasten it in place.
Tandem steel roller assembly with unique bottom-mount housing
Commonly used by a variety of wood sliding patio door manufacturers
1-1/4 inch diameter tandem concave steel rollers
End adjustment screw allows for precise door height and alignment (mounting screw not included)
Please refer to the line art drawing for dimensions and compare to your needs before purchasing (Not Universal)