Golden State Art, Pack of 50 11 1/4 x 14 1/8 Clear Bags for 11x14 Mat Matting 50- 11 1/4 x 14 1/8 clear Bag for 11x14 mat matting Actual size: 11-1/4 x 14-1/8"+ Flap 1 1/4" (Fits 11 x 14" 4-ply mat or 8-ply with backing)