Purchased a property with a window issue. I replaced the channel balance thinking that was the fix. looks like I need this Balance Shoe as well. This is a Milgard window, I put the Mfg info in a picture as well.
Tom from SWISCO responded:
May 4, 2017
Thank you for your inquiry. Carefully compare your measurements to our 18-188 top sash guide and let us know if this is a good match for you.