Archival Methods 100% Cotton Museum Board, 16x20", 4 Ply, Bright White, Package of 10

Application: For matting, mounting and preservation of fine prints, precious documents, and traditional and digital photographs. For window mats and mat backing we recommend using this 4-Ply board, which creates a 1/16'' separation between your artwork and its glazing, and will provide a flat, supportive backing for both display and storage. Features: Archival Methods' Museum Board is made of 100% cotton fiber. Bright White is a neutral tone board, is acid- and lignin-free, and incorporates alkaline or neutral sizing. All boards are buffered with calcium carbonate. This ensures protection from the destructive effects of acid migration from the matted work and from a polluted environment that might cause the pH of the mat board to decrease (become more acidic) with age. No optical brightening agents are used in the manufacture of our 100% cotton Museum Board.