Gaylord Archival Deep Lid Print Box Preserve prints, family records, newspaper clippings, manuscripts and other paper documents for future generations Archival quality: acid-free, lignin-free, passed P.A.T. (Photographic Activity Test), buffered to resist acid migration Your family history deserves the same level of protection used by the world's leading cultural institutions Metal edges add strength & style; deep lid keeps out dust, dirt & light Use with archival-quality envelopes from Gaylord Archival (sold separately)