This 25-pack of white 32 x 40" 4-ply Conservation Mat Board's from Lineco is used to mount and window mat photographs, posters, or flat art for display. Doing this also protects the paper materials from handling and gives longevity to the pieces.
The boards have a high alpha-cellulose conservation core and have been buffered with 3% calcium carbonate, which will protect against acid migration. The pigmented boards are also bleed and fade resistant. In addition, these boards can be cut down to smaller sizes.