"Polyethylene teraphlate glyci modified (P.E.T.G.) virgin grade extruded optically clear sheet is stronger than acrylic, but not as strong as polycarbonate. Excellent for thermoforming or fabricating, P.E.T.G. can also be screen printed or vinyl overlaid. P.E.T.G. is not UV stabilized, so outdoor use is limited. Sheets are film masked on both sides. The 5 sizes are 48""x96"" with varying thickness of .020"" all the way up to .118"" "