This 4-tier folding storage rack is built from anti-rust, anti-corrosion iron, so it holds up in kitchens, pantries, garages, and laundry rooms. It ships folded and needs no tools: unfold it and start loading. The open size is 28 x 13.5 x 50 inches, and the shelving unit holds up to 600 lbs standing on its feet or 240 lbs rolling on the wheels. Open mesh shelves keep dust from collecting, and because the frame folds flat it also travels well as a display shelf for craft fairs and vendor booths.