Sliding glass door roller

A quick learner from Kaunakakai, HI says:
I'm looking for replacement sliding door rollers that would be suitable for an oceanfront condo (the salt in the air tends to corrode everything).
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Casey from SWISCO responded:

Hello,

Take a look and compare the specifications of the 81-139 to yours. The housing isn't available in stainless steel but you can get it with the same nylon wheel, which holds up better when exposed to saltwater. Thank you!

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