Amazon.com : Foam Core Backing Board 3/16" Black 20x30-10 Pack. Many Sizes Available. Acid Free Buffered Craft Poster Board for Signs, Presentations, School, Office and Art Projects : Office Products
20 x 30 Foam Core Mounted Poster
10pk 20" X 30" Foam Board White - Flipside : Target
Gray/Charcoal Foam Board, 20"x30" | Royal Brites
Classic Style Movie Poster Frames 20x30 with Mat Board - Metal Picture Frame – Displays4Sale
30th Birthday Newspaper Poster Sign 30th Birthday Gift for Women or Men 1993 Birthday 30 Years Ago Back in 1993 Highlights - Etsy
Elmer's® 20 x 30 Foam Board White (1/2" thick - 10 sheets)
25 Pieces 20" X 30" Red Foam Board - Poster & Foam Boards - at - alltimetrading.com
BAZIC 20" X 30" 10-Slots Foam Board Display Rack Only - Bazicstore
Royal Illustration Board 20 x 30 White - Office Depot
In case anyone else is on the hunt, I just picked up my welcome/schedule sign from Walgreens for $18. It's a 20x30 poster board with a 50% off photo coupon. : r/Weddingsunder10k
Office Depot® Brand Foam Board, 20" x 30", White - Yahoo Shopping