Maximize your storage with this 4-tier collapsible metal shelving unit. Designed for convenience and durability, it requires no assembly—just unfold and use instantly. Crafted from heavy-duty carbon steel with a rust- and corrosion-resistant finish, this rack supports up to 600 lbs without wheels and 240 lbs with wheels. The open shelves and cross-brace design provide stability and prevent items from falling, while the 360° rolling wheels make it easy to move from room to room. Two of the wheels lock in place for added safety. When not in use, the unit folds flat for compact storage behind doors or under furniture. Whether in the garage, kitchen, living room, or office, this modern black shelving rack keeps your space neat and organized with minimal effort.