Heritage Arts Archival Double Mat Black 8x10

Display, exhibit and preserve artwork, photographs, documents, etc. 8" x 10" mats have a window opening of 4½" x 6½" to display 5" x 7" images. Each archival series mat kit includes bevel-cut, archival alpha-cellulose 1/16" thick mat board that is acid-free and lignin-free, 1/8" thick archival and acid-free foam core, and an archival polypropylene crystal clear envelope with self-adhesive closure. Meets all Library of Congress conservation standards. Double layer black mat kit.