Foam Board 24 x 36 x 3/16" (5mm) - 12 Pack - White Poster 24x36 in | eBay
STRAWBLEAG 16Pcs A3 White Foam Board 11.75" x 16.5", 3/16" Thickness, White Poster Board Foam Core Backing Board for Projects, White Mat Boards for Art Presentations Crafts Display - Yahoo Shopping
36 x 48 White Foam Project Board Bulk Pack of 24, 36 x 48 - Kroger