On Monday, July 9, 2018 at 6:01:52 PM UTC-4, Ed A wrote:
I have learned that the canopy and sliding window were not manufactured by Mecaplex. Apparently, the sliding window is a standard Polish design and is used in many other Polish gliders. So, if anyone has a replacement window ... new or used ... from any Polish glider, I would like to hear from you.. Thx

Would this work?

http://glidersource.com/cgi-bin/post.cgi?id=1298