24 in. x 36 in. x 0.118 in. Black Foam Project Board (5-Pack)

Komatex Foam PVC Project Board is a versatile, closed-cell, rigid foam PVC sheet that can be used in a variety of applications, including but not

ABS Sheets Source One Displays

Falken Design 36 in. x 48 in. x 3/8 in. Thick Acrylic Black Opaque Sheet Falken Design ACRYLIC-BK-3-8/3648 - The Home Depot

Opaque - Plexiglass - Glass & Plastic Sheets - The Home Depot

Best Rated - Indoor - The Home Depot

Much stronger then foam board, but about the same weight. Rigid polystyrene foam core laminated between two veneers of resin-impregnated wood fiber.

24 x 36 x 3/16 Black Gatorfoam Gator Board 5 Pieces

Palight ProjectPVC 24 in. x 48 in. x 0.118 in. Foam PVC Blue Sheet 158199 - The Home Depot

White - Plexiglass - Glass & Plastic Sheets - The Home Depot

AdirOffice 24 in. x 36 in. x 0.093 in. Plexiglass Black Acrylic Sheet 2436-1-B - The Home Depot

117: Komatex PVC Board by Kommerling is a Great DIY Material