Quality Alvin photography mat board is available in both solid black and black and white. Great traditional mat board for mounting or matting photographs in standard photograph sizes: 8" x 10", 11" x 14", and 16" x 20". Black and white has one side black, one side white with a cream-colored core. Matte finish. Black on black board has deep black sides with solid black core. 16 ply, approx. .050-.055" thick. Acid Free. Buy in bulk, cut your own mat boards and save money! PACKS OF 25.