The Polar White, 8.5 x 11" Archival Methods 4-Ply Museum Mat Board (25-pack) can be used for many fine print and document projects. Whether your are using it for a traditional print or digital technology, this board provide a solid, acid-free backing that is ideal for display purposes. It can also be used for small mat cutting and provides a 1.6mm separation between your work and the glazing.