Double rollers vinyl glass patio door , no markings on either.
A handy person from Cool California says:
January 30, 2021
Double roller set with one inch wheels. Probably 15 years old? A 1 1/4 inch wheel set dropped right in but won't clear to install. Need to locate a replacement set. Thnx!
Bob from SWISCO responded:
February 1, 2021
I want you to start by looking at our 81-138. Compare the dimensions and see if you think this could work for you.