Measuring 20 by 24 by 3 inches (actual size is 20.5 x 24.5 x 3 to allow for all documents to fit with ease) this blue-gray Lineco Museum Storage Box is ideal for protecting important documents, delicate papers, photographs and artwork. Featuring a drop front to conveniently retrieve valuables, each box is constructed with a buffered 60 point board that is reinforced with metal edges. Both acid and lignin-free, this archival storage box will protect against acid, airborne pollutants, light and dirt. Holds documents/art/photographs up to 20 x 24 inches.