Heritage Art Pre-Cut Double Layer Archival Mat Kit Black

Pre-cut double layer archival quality black mat kit.

Each archival series mat kit includes bevel - cut, archival alpha - cellulose 0.0625 in. thick mat board that is acid - free and lignin - free, 0.125 in. 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.