Patio Door Roller
A contractor from Porterville, CA says:
December 2, 2015
Very old aluminum patio door. No Markings
Dave from SWISCO responded:
December 4, 2015
This is a weird roller, but I have a couple ideas. Consider our 81-002 or 81-023. These may be what you want, but consider that both of these roller housings will need a counter sink hole drilled in the bottom rail to install a flat head screw, so as to not interfere with the glass. Could this solution work for you? Also take a look at our 81-274 roller. I have a feeling this could be a newer version of your roller, but I'm not sure how it will hold into the bottom rail of the door.