Sliding door hardware

A home owner from Lakewood, CO says:
The sliding door is wood but has no indication of the door mfg that I can see. The part I need most is the 35 1/4 inch plastic "sleeve" into which the dual rollers inset. The plastic sleeve also has weather stripping "fur". There's another same size door that needs sleeve replacement. In addition I'll likely need 4 sets of the dual rollers.

Appreciate the help!
User submitted photos of patio door hardware.
Profile picture of Paul
Paul from SWISCO responded:
Thank you for posting. The roller appears similar to our 81-018. Carefully compare our dimensions to your own to confirm that they match. Unfortunately, we do not have the plastic sleeve you mentioned.
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