I agree with the previous respondent. Poor circulation, even with the fan going max. I had a 19 with sliders and a 21 with frameless. In spite of once leaving the slider open during a hard rainstorm, I would still get the sliders again. There is a hack for the frameless windows which allow the window to open wider, and I am sure you can look it up on the Escape
forum. the Screens fit just fine, the only problem is when you have to remove and then replace.