8x10 Photo Mat With Bevel Cut Oval Opening for 6x8 Photos White Acid-Free Photo Mat Includes 10 Matboards Our acid-free White matboards are 4-ply and feature a white core. With an overall size of 8x10, these mats with Oval openings fit perfectly into 8x10 frames and are bevel cut to showcase your 6x8 photos. Actual mat opening size is 5.5x7.5 inches so that it may safely and securely house your 6x8 photo, artwork, needlepoint, sign, etc. This pack includes 10 Matboards. Proudly made in the USA by Country Art House!