Amazon.com : Union Premium Foam Board 22 x 28 x 3/16" 10-Pack : Matte Finish High-Density Professional Use, Perfect for Presentations, Signboards, Arts and Crafts, Framing, Display (White, 22x28) : Office Products
22" X 28" Foam Core Direct Print
Pacon Ghostline White Foam Board, 22" x 28", 5/Carton (PACCAR90330K) | Staples