50 Pack Acid-Free Mat Boards - 8x10 Uncut White Backing Boards, 4 - Ply Thickness Backer Boards for Photos, Pictures, Frames, Artworks and Prints

This item comes with the 25 pre-cut mats, 25 backing boards and 25 clear bags. The opening size is 7.5"x9.5" for 8x10 print. Color: White. The mats are beveled cut with white core and 4-ply thick (about 1.4 mm or 1/16 inch), The backing is white on both side.