Royal Eco Brites 27135 48" x 36" White / Black Tri-Fold Corrugated Display Board - 6/Case
Office Depot Brand Tri Fold Project Board 36 x 48 White - 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
BAZIC Tri-Fold Corrugated Presentation Board - White 28" X 40" - Bazicstore
Elmer's Tri-Fold Corrugated Display Board, 28" x 40", White - Walmart.com