Rollers and railing for patio door

A home owner says:
Hello, how would i identify which replacement rollers fit my patio door? Also, railing replacement.
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Tom from SWISCO responded:

The best way to identify rollers is matching up physical design and size. Just eyeballing your photos, your roller looks like a good match for our 81-149. Ours lacks the clip you have on top, but you can reuse that.

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