Office Depot Brand 2 Ply Tri Fold Project Board 36 x 48 Yellow - Office Depot
Amazon.com : Trifold Poster Board 36" x 48" White Presentation Board Science Fair Display Boards - for School, Fun Projects and Business Presentations - by Emraw : Office Products
Science fair trifold poster board
Tri-Fold Foamcore Prints | megaprintinc
Amazon.com : 8 PCS Trifold Poster Board- Large 40" x 28" Tri Fold Display Board Hard & Thick White Presentation Cardboard for Science Fair, School Projects, and Business Presentations Supply : Office Products
Corrugated Tri-Fold Display Board, 36" x 48" | Michaels
8 PCS Tri Fold Display Board- 40" x 28" Trifold Poster Board Large, White | eBay