Here's the pdf on the material:
http://www.sheffieldplastics.com/web...8SHF_VI_DS.pdf
This is one tough canopy.
The canopy started out as a flat .030 sheet of special high impact strength PET-G made by Vivak. It is tough as nails! I put some 15% nitro fuel in the cupped area of a scrap piece and it has absolutely no affect on the plastic.