Pacon 72550 Precut Mat Frames, 4 Assorted Colors, 12 ea. of 5 Assorted Sizes, 60/pack Twelve mat frames each of five sizes: 4 x 6, 5 x 7, 9 x 12, 12 x 18 and 18 x 2 hand vertically or horizontally. Sixty frames per pack; 100% total recycled content. Enhance students' artwork for art fairs and displays. Mats hang vertically or horizontally. Twelve mat frames each of five sizes: 4 x 6, 5 x 7, 9 x 12, 12 x 18 and 18 x 2 hand vertically or horizontally. Sixty frames per pack Mats hang vertically or horizontally. Enhance students' artwork for art fairs and displays. 100% total recycled content.