GREENGUARD® Gold certified. We've hinged a WD15500 Center Storage Unit with (2) WD15700 (3) Shelf Units to create versatile & affordable space-saving storage. Includes attached locking hasp and heavy-duty casters. 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 36"W x 30"D. Opens to 38"H x 72"W x 15"D. Units are fully assembled on locking casters. Simple hinge pin connection required. Lifetime warranty. Made in the U.S.A.