Polycarbonate is a durable plastic that maintains its toughness, dimensional stability and impact resistance over a wide range of temperatures. Clear polycarbonate is often used as a lightweight, impact-resistant alternative to acrylic sheets because it is 25 times stronger and almost impossible to break. Large backlit faces are typically fabricated from 3/16" thick white polycarbonate. Oversized sheets are available. Custom Cut & CNC Services are available. Smaller sizes available in Sign Blanks.