The slider windows are quite old (from 1979, we think). The rollers we need measure 1 11/16" in overall length, and 15/32" in width. We don't see any markings.
Emily from SWISCO responded:
October 18, 2021
Hello there!
This reminds me of our 87-222, but carefully look over our dimensions and see if this matches your original hardware.
Dimensions for 87-222
A home owner from New Mexico says:
October 20, 2021
Thank you so much! We will check our part carefully to be sure this part you are suggesting will fit. We very much appreciate your prompt response! Best, Emily and Ray