rollers for aluminum slider.

A professional from San Rafael says:
November 19, 2018
The screw that holds the plastic housing to the frame only catches the lip of the plastic housing. Very odd. There is no hole drilled through the housing to mount it. I think you can see from the pics.

Plastic housing for rollers has this number stamped on it
7-M10-173

I hope this helps
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Paul from SWISCO responded:
November 26, 2018

Take a look at our 87-138 roller and compare it to yours. This may be what you're looking for.
Keller Sliding Window Roller, 5/16" Flat Wheel
Keller Sliding Window Roller, 5/16" Flat Wheel
87-138
$4.39
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