A La Maison Ceilings Bead Board 1.6 ft. x 1.6 ft. Glue Up Foam Ceiling Tile in Plain White (21.6 sq. ft./case) R104pw-8 - The Home Depot | Beadboard, Ceiling tile, Plastic ceiling tiles
How We Turned Our House into a Giant Foam Box, Part II — Ceiling Insulation — Frugal Happy
DIY Glue Up Ceiling Panels, Foam Planks, Tiles - 39.3" x 6.5", 12 Pcs/Pack | eBay
A La Maison Ceilings R104 Bead Board Foam Glue-up Ceiling Tile (384 sq. ft./Case), Plain White - Amazon.com