Elmer's 36" X 48" Tri-fold Foam Presentation Board - Black : Target
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
Artskills 36" X 48" Tri-fold Corrugate Project Display Board - White : Target
BAZIC Tri-Fold Corrugated Presentation Board - White 36" X 48" - Bazicstore
Elmer's® Tri-Fold Foam Display Board - White, 36 x 48 in - Harris Teeter
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