Sliding Window - Plastic Housing Roller Wheels

A quick learner from Longboat Key, FL says:
The window slot is 9/16ths at the lip and widens to hold the housing to approx 10/16ths. Wheel diameter is 23/32nds or possibly as small as 11/16ths. Depth is approx 1in. Original was likely a steel bearing.

West coast Florida, likely PGT Windows approx 1982.
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Paul from SWISCO responded:

Hello,

Take a look at our 87-001 Crossly roller and see how it compares to yours. Thanks for posting! 

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