Sliding patio door

Hello! You have an old discontinued roller that is not made anymore. That said, a friend of ours says the 81-279 works as a nice replacement. The adjustment screw is a little higher, but the wheel rolls more smoothly than the noisy old tank tread-style roller.

A shim helps to bring the adjustment screw low enough to reach it under the panel. Finally, make sure you can reach the adjustment screw before putting the door back.  I hope that info helps.