The roller housings in my windows have the same dimensions as your 87-168, but the wheels in mine have a diameter of 7/16", not 3/8". Do you think your 87-168 will work in my windows, or do you have a product with the same housing and a 7/16" wheel that has the same 1/8" thickness and 1/4" axle as the 87-168?
Dave Sr. from SWISCO responded:
March 20, 2017
I'm not sure if the 87-168 will work as a replacement for your roller. Do you know the manufacturer of the window. That might help identify the proper match.