Amazon.com : Corrugated Plastic Sheet for Indoor and Outdoor Use - 3/16 Inch Thick Poster Board, 24x36 Inches - Pack of 5 White Plastic Board Sheets - Waterproof Coroplast Sheets and Lightweight
Polycarbonate Sheet - 3/16" x 24" x 48" White | Polycarbonate Plastic Sheet Supplier | Piedmont Plastics