Two clear plastic sheets side by side comparing polycarbonate and PETG thermoplastic for light covers and signs

Polycarbonate vs PETG: Which Sheet Wins for Light Covers, Signs, and LED Lenses?

comparison

Polycarbonate beats PETG on impact, heat, and flame rating. PETG beats polycarbonate on cost and chemical resistance. A buyer's guide for lighting, sign, and machine-guard work with verified ASTM specs and a decision matrix.