Our acid-free matboards are 4-ply and feature a white core. With an overall size of 20 x 20 these mats fit perfectly into 20 x 20 frames. Each mat is bevel cut to enhance your 12 x 12 photos. The actual mat opening size is 11.5 X 11.5 Inches so that it may safely and securely display your 12 x 12 photo artwork needlepoint sign etc. Includes backing and bags. Brand: CountryArtHouse
