Dimensions are 11 x 12-1/2 x 6" and 11 x 15-1/2 x 6"Holds letter- or lega-size files, loose or in document casesDocument box is constructed of durable, archival quality Coroplast, a corrugated co-polymer that's chemically inert and additive-free. Case features a flip-top, drop-front for easy access and a heavy-duty latch to ensure case remains securely closed. Box is metal edged for strength and stability.Overall size: PDS12510 (letter): 11 x 13-1/2 x 6" PDS15510 (legal): 11 x 16-1/2 x 6" Note: It's recommended that blueprints, cyanotypes (old blue photos), albumen prints (a photograph printed on paper that is coated with an emulsion of egg whites) and early color photographs be protected and stored in unbuffered material.