Pack of 100 MIXED COLORS 7.5"x9.5" UNCUT Mat Board / Matboard Blanks for Framing / Crafting Package of 100 sheets of mat boards (7.5"x9.5") for crafting These are Acid Free matboards, Standard 4 ply: 1.4 mil or 1/16 inch Perfect crafting material for crafts, backboards, signs, children's projects, and school projects. Outside Dimensions: 7.5x9.5" 18 different colors