roller wheel assembly for an older Kolbe-Kolbe Garden-Aire Slider

A contractor from herndon, va says:
Looking for replacement assemblies. Thanks. M
User submitted photos of a patio door roller.
Profile picture of Tom
Tom from SWISCO responded:
This resembles our 81-018 roller, though I'm not sure if that's what you need. Carefully compare our dimensions to your own measurements to confirm that it will work.
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