Archival Methods 5 x 7" 4-Ply 100% Cotton Museum Board (25-Pack, Bright White)

The 25-pack bright white 5 x 7" 4-Ply 100% Cotton Museum Board from Archival Methods is suitable for matting, mounting, and preserving valuable documents, fine prints, and photographs. When used for window mats and mat backing for small prints, the 4-ply thickness of each museum board provides a 1/16" separation between artwork and glazing, thus providing flat and sturdy support. Made of 100% cotton fiber without any brightening agents, this museum board is acid and lignin-free and ensures protection against the destructive effects a polluted environment might cause as your artwork ages.