I just got this ad and thought it might be useful to others building planes as well. please note that the screen are 1/8" polycarbonate (not acrylic) so they will scratch easier. However, polycarb is extremely impact resistant and was likely not stretched so the thickness is probably very near the original sheet gauge before forming. I have dealt with these guys a lot over the years and they are top drawer in every way.
https://secure.chassisshop.com/partlist/15277/
https://secure.chassisshop.com/partlist/15277/