Backing

[30Pcs] A3 Black Foam Board 16.5" x 11.75" Black Foam Core Board 3/16" Thick Poster Board Black Foam Backing Boards for Crafts Making Art Presentations
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[30Pcs] A3 Black Foam Board 16.5″ x 11.75″ Black Foam Core Board 3/16″ Thick Poster Board Black Foam Backing Boards for Crafts Making Art Presentations

$31.99
20 Pack A3 Black Foam Board 12"x16.5", 1/5" Thick, Foam Core Backing Board Poster Foam Board Sheets for Presentations, School, Office & Art Projects
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20 Pack A3 Black Foam Board 12″x16.5″, 1/5″ Thick, Foam Core Backing Board Poster Foam Board Sheets for Presentations, School, Office & Art Projects

$18.99
20 Pack White Foam Board 14 x 11 inches Foam Poster Board, 3/16" / 5MM Thick Form Core Backing Board for Projects, Artwork, 3-D Modeling, Crafts, Poster Making, Presentations
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20 Pack White Foam Board 14 x 11 inches Foam Poster Board, 3/16″ / 5MM Thick Form Core Backing Board for Projects, Artwork, 3-D Modeling, Crafts, Poster Making, Presentations

$18.99
20Pcs White Foam Board 14 x 11 inch White Poster Board 3/16" Thick Foam Core Board White Foam Backing Boards for Crafts Poster Making Art Presentations
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20Pcs White Foam Board 14 x 11 inch White Poster Board 3/16″ Thick Foam Core Board White Foam Backing Boards for Crafts Poster Making Art Presentations

$19.99
HOZEON 50 Pack 11 x 14 Inch Foam Boards, White Foam Board, 1/8 Inch Thickness Foam Core Backing Board Polystyrene Poster Board Signboards for Presentation, Artwork, 3D Modeling
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HOZEON 50 Pack 11 x 14 Inch Foam Boards, White Foam Board, 1/8 Inch Thickness Foam Core Backing Board Polystyrene Poster Board Signboards for Presentation, Artwork, 3D Modeling

$28.49