Id please

A quick learner from JACOSONVILLE says:
No markings on the door or rollers. I had to remove the right rail with 2 screws on the top and 2 on the bottom to access this roller.
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Bob from SWISCO responded:

Start by looking at our 81-270 or its stainless steel variant, the 81-275 . Let me know if this matches up dimension-wise, or if it does not. 

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