Can't find this roller anywhere

Hi,

The glass door on our screen porch has a broken wheel, but I can't find any identifiers on the brand or manufacturer. The entire porch looks like a kit (aluminum and vinyl). The glass door is solid, but this roller looks very flimsy. Can you help me find a replacement, please? Thank you.

The roller housing is 5/8" wide with a top flange that is 13/16" wide (slips into a track in the door frame). This housing is 1 1/8" high (the wheel extends below this). The wheel is metal with a 1 1/4" diameter. The entire unit, including the wheel, is 3" long (plus adjustment screw).

Thanks again for your help.