roller for aluminum veranda windows

A contractor from Santa Rosa Beach Florida says:
September 9, 2020
Hello there are two of these rollers per aluminum window (in a veranda), sorry I don't have measurements, they slide into place into the bottom of the window but are not screwed in. A local vendor thought HWP17 ROLLERS would be a match (not sure if it is an exact match).
Thank you.
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Bob from SWISCO responded:
September 14, 2020

Sliding window rollers can be very hard to find replacements for, since the dimensions must be exact. This looks like our 87-106, but you'll need to compare the dimensions to confirm. 
Sliding Window Roller, Concave Wheel
Sliding Window Roller, Concave Wheel
87-106
$6.51
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