Giant Puzzle Piece, Thick Unisub® MDF Plaque, 12" x 12" x .625", Raw Back with key hole. These unique wood plaques make excellent wall art, are used for schools, fit together into murals, etc. Great for Autism logo related signage. For production of black edged MDF plaques, we recommend the Mohawk® Ultra-Mark™ 2000 Touch Up Marker, #2 Black, sold separately. This paint pen contains black ink that blends well to repair and conceal small areas on black Unisub plaques with small spots, lines or errors.