The BCW Sheet Music Bags are an acid free, archival quality product made of crystal clear polypropylene. The BCW Sheet Music 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.
- Boards are pre-loaded into the Bags
- Standard: 9 1/4 x 12 1/8
- 1 1/2 inch flap for closure
- Protect sheet music while handling