Our acid-free matboards are 4-ply and feature a white core. With an overall size of 24 x 36 these mats fit perfectly into 24 x 36 frames. Each mat is bevel cut to enhance your 20 x 30 photos. The actual mat opening size is 19.5 X 29.5 Inches so that it may safely and securely display your 20 x 30 photo artwork needlepoint sign etc. Brand: CountryArtHouse
