Biskitt - another thread was recently posted regarding the same question. Here is a cut & paste of answer from another poster. "" Try dkhardware.com CRL Z78295C Zipper Pile Weatherstrip .270" Backing - .250" Pile Height - 100' Roll. I just finished rebuilding all the salon windows on a 3807. One inch wide thin plastic scraper will allow
you to push it in. To do all the salon and aft windows I used almost 400 ft. Replacing all. I removed all windows to make the
job go easier. If window sliding is tough, insert eplastics.com Slick Strips UHMW Sheet and Tape is a product line that we have been producing for over 25 years. Slick Strips reduce friction on all surfaces. Wherever you need to increase sliding action. We now can move our large salon windows with one finger."" Good luck!

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