Store, protect and transport your valuable art work, prints, documents and more with the black with white lining 22.5 x 28.5 x 2.5" Solander Museum Case from Archival Methods. This case holds up to 24 4/2 ply, 19 4/4 ply, or 34 2/2 ply window/mats. For confident stacking, this strong case is constructed with low-resin basswood sides and spine, and a black, acrylic-coated cloth exterior. The interior lining is acid and lignin-free card stock. The hinged, lay-flat design provides easy-access to contents. Users will appreciate the latch closure, nickel-plated hardware, and metal, 3 x 1.25" label holder.