Our acid-free Textured White matboards are 4-ply and feature a white core. With an overall size of 16x20, these mats with Oval openings fit perfectly into 16x20 frames and are bevel cut to showcase your 14x16 photos. Actual mat opening size is 13.5x15.5 inches so that it may safely and securely house your 14x16 photo, artwork, needlepoint, sign, etc. This pack includes 1 Single Matboard Show Kit With Acid Free Backing & Clear Bag. Proudly made in the USA by Country Art House!