GREENGUARD® Gold certified. We've hinged our (25) colored tray storage with (2) WD25000 storage shelves to provide maximum storage capability. Hinged with a locking hasp for convenience. Constructed from 100% Plywood, and coated with our exclusive Tuff-Gloss® UV finish. Recessed backs for added strength, stability, and beauty. Fully rounded corners and edges for maximum safety. Folds to 48"W x 30"D Opens to 38"H x 96"W x 15"D. Units are fully assembled on locking casters. Simple hinge pin connection required. Lifetime warranty. Made in the U.S.A.