Roller for sliding door screen

A quick learner from Doylestown, PA 18901 says:
I need to replace one of the rollers on the screen for a sliding glass door. Can you please advise me on the part number and price for a new roller?
Thank you.
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Tom from SWISCO responded:

Sure, see our 84-074B. This looks like a very good match for your roller, but look it over and let me know if you agree.

A professional from Wailuku says:
The small screws that are used to mount this assembly are totally rusted. Do you have the screws available.
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Bob from SWISCO responded:

Hello there. I believe our 33-071 or 33-074 would work with this roller; but you'll want to compare these fasteners to your originals to see if either seem to match what works with your door. Let me know what you find. 

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