X2 on hehr window link above. Their web site is hard to get around and to find what you want. But everything is there. Everyone of those little tiny numbers on your window mean something. Tint, style,radius etc. If you get stuck I've had some experience with mine. You use the word "seals" that means different things to different people IMO. RV "window" mechanics are hard to find. And most RV dealers call a guy that serves many dealers and they just add the price onto your bill. There are also some youtube vids on window "trim" or vinyl insert. My front cabover window is a vet of 7 times I had it in and out because of one reason or another. Go slow and take your time. There to expensive not to.