Roller for top of sliding glass door

A home owner from 90620 says:
Part needed for top of sliding glass door
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Tom from SWISCO responded:

Hello! We have a few different top guides with that housing, but I'm not sure what you have since I can't see the actual guide itself. I recommend starting by looking at our 23-046, 23-055, and 23-090. One of these may very well be what you need to repair your door.

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