Modular stacking trays that stack up to five feet high to form a complete flat filing system. Constructed of high density polyethylene with steel reinforcement for rigid support and strength. Easy to clean. Trays have a 40 lb. load capacity and are ideal for storing matte board vellum acetate drawings blueprints and other flat materials. White color. Overall size is 3"h x 39"w x 26"d with a content size of 2"h x 36 3/8"w x 24 1/4"d. 2-pack.