United Visual Products 48" x 36" Single Door - Corkboard-Cork backing board-Satin frame
Free Standing 48 x 36 Outdoor Message Center with Double Doors – BulletinBoards4Sale
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
Pacon Presentation Board, Blue, Single Wall, 48 In x 36 In, 6 Boards at Lowes.com
Pacon® Presentation Board, Black, Single Wall, 48" x 36", Pack of 6