Prime-Line 1-1/4 in. Nylon Ball Bearing Sliding Door Dual Roller Assembly, for Ador and Hilite (Single Pack)

This is a unique one of a kind trolley style roller assembly with two parallel 1-1/4 in. concave steel rollers in a stamped steel housing. Used on Guaranteed Products patio doors, it's unique housing fits into the bottom rail held in place by the two existing screws in the door. Purchase the Prime-Line part D 1548 for the steel roller version.