Our acid-free White Linen Canvas matboards are 4-ply and feature a white core. With an overall size of 13x19, these mats with Oval openings fit perfectly into 13x19 frames and are bevel cut to showcase your 11x14 photos. Actual mat opening size is 10.5x13.5 inches so that it may safely and securely house your 11x14 photo, artwork, needlepoint, sign, etc. This pack includes 1 Single Matboard. Proudly made in the USA by Country Art House!