Prime-Line D 1563 Roller Assembly 1-1/2 in Dia Roller 5/16 in W Roller Steel 1-Roller Plain Back Mounting

Used by Air Control, Howmet, Krestmark and many other patio door manufacturers. Steel ball bearing roller and adjustable 2-5/8 in L x 1-3/8 in H x 3/4 in D steel housing assembly with machine threaded holes (10-32 top and 1/4-20 side) for installation.