I have Certainteed vertical hung retrofit windows. The vent stops are 3" tall x 1/2" wide. Do you have a compatible part?
Tom from SWISCO responded:
October 18, 2016
The closest match I've been able to find is our 26-148, though it's a little short compared to yours. If this won't work, could you use a surface mount vent lock like our 26-387 instead?