Golden State Art, Pack of 25, 11x14 White Picture Mat Full Set - Fit 8.5x11 Photo/Certificate - High Premier Acid Free Bevel Pre-Cut White Core Mattes - Includes 25 Backing Backer Board & Clear Bags SET INCLUDES: 25 11x14 Single Mats, 25 Backings, and 25 Bags MAT INNER/OPENING SIZE: 8 x 10 1/2 inch (Fit for 8 1/2 x 11 Photos) | OUTSIDE SIZE: 11x14 MAT DETAILS: Mats are Acid-Free | THICKNESS: 4 ply (1.4 mm or 1/16 inch) | White color | Pre-cut Beveled with White core DISPLAY YOUR ART/PHOTOS: 11x14 Decorative Kit to show your 8.5x11 artwork. Enhance your photos with these high quality White mats with Clear Bags and Backing Board to safely protect your photographs for framing. NOTE: Check to make sure the Mats Inner/Opening Cut size fits your photo, print, or artwork.