replacement window stop

I'm afraid I couldn't find an exact match for this top sash guide. That said, one of ours may still work. I've made a list of possible replacement parts based on your dimensions, which you can see on the right side of this page. Now, I can't guarantee any will work, but it's a launching off point, at least. Also, don't be too concerned about the size of the head flange. Just make sure the measurements of the main body and the placement of the mounting hole align with your sash guide.