Thank you for your response. I checked page 25 and it appears there are two rubber gaskets inside and out. I see probably 10 different styles shaped of gaskets online and I was hoping to have replacement on hand before removing the window. The diagram wasn't clear enough for me to determine which gaskets to purchase. I had an honest helpful RV repair shop where I could get suggestions, parts and advice. They retired and closed shop earlier this year.I have accomplished replacing plumbing, electrical, remodeled interior myself and completely rebuilt rear wall (previous owner backed into ?? And pushed the old ladder through the wall, bathroom and closet). $100 for parts isn't bad at all when not having to pay $200+ more to have it installed. If you do find which weatherstrip/gasket(s) it requires I would be grateful. Thanks again