GREENGUARD Children & Schools 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. All surfaces and backs are 100% Healthy Kids Plywood with our exclusive Tuff-Gloss UV finish. Measures 36"H x 36"W 30"D when closed. Opens to 72"W.