The BCW Treasury Bags are an acid free, archival quality product made of crystal clear polypropylene. The BCW Treasury Backer Boards are made from a full 24 point solid bleached sulfate, coated on one side with a buffered with 3% calcium carbonate, and are precision cut to size.
Treasury bags: 10 1/2 X 13 1/2 + 2" flap
Treasury boards: 10 1/4 x 13 1/2in