White, Yellow or Black 4mm 24"x36" Corrugated Plastic Sign Panel
24" x 36" Rectangle Corrugated Plastic Sign Blanks - Hall Signs
Amazon.com: 8 Pack Corrugated Plastic Yard Signs 24x36 for Outdoor, Open House, Birthday, Lawn, Foam Poster Board with 4mm Blank Surface (Black) : Patio, Lawn & Garden
Corrugated Plastic Sheet for Indoor and Outdoor Use - 3/16 Inch Thick Poster Board, 24x36 Inches Pack of 2 Black Board Sheets Waterproof Coroplast Lightweight Blank Yard Signs - Yahoo Shopping
Outdoor/Yard Signs (Corrugated Plastic)-120
24x36 4mm Corrugated Plastic Sheets 2 Pack Black Waterproof Lightweight, Blank Boards Double Sided for Lawn Signs, Garage Sales and Real State. Various Sizes, Colors by WholesaleArtsFrames-com - Walmart.com