This pocket door roller assembly is constructed of a steel bracket housing, and it comes in a zinc colored finish. The bracket’s base measures 2-1/2 in. x 1-3/8 in., and the wheel has a maximum adjustment height of 2-1/4 inches. From the lowest setting, this roller assembly has a total adjustment travel of 5/16 inches. The wheel is constructed of durable plastic which provides for a smooth, long-lasting, quiet roll and it features steel ball bearings and a convex (round) edge. This pocket door roller assembly mounts on the tops of sliding pocket doors, it is adjustable once installed, and it is used by many pocket door manufacturers.