Window roller for large bathroom window

A handy person from Perrineville NJ says:
April 9, 2021
it says Saunders Engineering on the bottom of the part
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Bob from SWISCO responded:
April 13, 2021

I can't really say what roller you might need without seeing it out of the window, but start by comparing your old roller to our 87-221. See if all the dimensions match up.
Tandem Roller Assembly, 7/16" Brass Flat
Tandem Roller Assembly, 7/16" Brass Flat
87-221
$5.54
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