Need two bottom patio door rollers with screws for Guardian door

Thanks for posting. The 81-287 appears to be our closest match, as it appears to have the same housing. Look over the diagram below to confirm it matches what you need. However, this roller only has a single wheel, whereas yours is a tandem roller. I suspect this tandem version is no longer available. See if you can use the 81-287 instead. Let me know what you think.

Detail of 81-287