Office Depot Brand Tri Fold Foam Display Board 36 x 48 Black - Office Depot
Elmer's Tri-Fold Corrugated Display Board, 28" x 40", White - Walmart.com
Display Board Bulk Case 36
Black Trifold Presentation Board 36" x 48 Display Exhibition Board Lightweight | eBay
Amazon.com : 8 PCS Trifold Poster Board- Extra Large 48" x 36" Tri Fold Display Board Hard & Thick White Presentation Cardboard for Science Fair, School Projects, and Business Presentations Supply :
Science fair trifold poster board
Mini Calendar Display (Trifold Presentation Board) by The Blue Brain Teacher
ArtSkills Tri Fold W Header - Each - Randalls
Amazon.com : Sherr 12 Pcs Tri Fold Display Board 48 x 36 Inch Black Trifold Poster Board Presentation Cardboard Large Foldable Lightweight Science Fair Display Board for School Projects Business Presentations : Office Products