Coroplast 48 in. x 96 in. x 0.157 in. (4mm) White Corrugated Twinwall Plastic Sheet CP4896S - The Home Depot
Pallet of Corrugated Plastic Sheet | Size:4'x8' with 4mm thick | Boxes4U
Corrugated Plastic Sheets 4 x 8, Sheets 4'x 8'
12x18 4mm Corrugated Plastic Sheets 100 Pack White Waterproof Lightweight, Blank Boards Double Sided for Lawn Signs, Garage Sales and Real State. Various Sizes, Colors by WholesaleArtsFrames-com - Walmart.com
Green Corrugated Plastic 4' x 8' 10mm
Amazon.com : Corrugated Plastic Sheet for Indoor and Outdoor Use - 4 Mm Thick Poster Board, 24x36 Inches - Pack of 2 White Plastic Board Sheets - Waterproof Coroplast Sheets and Lightweight