Sliding Patio Door Roller Assembly

A quick learner from Melbourne, FL says:
There are no markings, labels or numbers on the Patio Sliding Glass door frame, doors or the roller assembly. Attached is a .pdf with images and measurements. There are 2 per door, each with a single steel roller in each assembly.

It appears that your pn# 81-245 or 81-259 are very close.

User submitted photos of a patio door roller.
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Tom from SWISCO responded:
How about our 81-261? This has similar dimensions to yours, but unlike the other two, the adjusting screw is on the bottom. See what you think.
A quick learner from Melbourne, FL says:
the 81-261 looks correct. What is the length of the main housing? Where mine measures 2-3/16. It's not indicated on your webpage.
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Paul from SWISCO responded:
The length of ours measures 2-1/8", however length is not that important for this kind of roller.
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