PE Del Mar rollers

A home owner from Pittsburgh says:
Looking at the Del Mar web site, I believe this unit is SKU#F3727. I'm pretty sure this is a 1 1/4" wheel. These are used in a pool environment, and the doors become very hard to open or freeze up after a few years. We need 10 of these units. Would stainless steel or nylon wheels prevent this?
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Bob from SWISCO responded:

It's a bit difficult to match this without knowing the dimensions more precisely. Look at the rollers I've associated on this page. Compare the diameter of the wheels and the height and thickness of the assembly to see if any of these match best. 

A handy person from fl 33028 says:

This is for a boat sliding door replacement SEARAY 400 SEDAN BRIDGE, I need 2 in Stainless steel.

The old ones are PE DEL Mar, I have photos but I didn't measure it.

Looks like f3727

See photos.

Please include the screws in SS also.

Sorry I forgot to measure it.

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Dave Sr. from SWISCO responded:

Take a look at the 81-004 roller and compare the dimensions with your roller to see if they match up. We do not carry this roller in stainless steel and we don't believe it is available, unfortunately. We do carry the screws in stainless steel, which would be our 33-103 and 33-104. Look these parts over and see what you think. 

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