... steel. Acid washing,phosphorizing, powder coating. Knock-down. Home steel 3-door locker: 1. High quality cold-rolled steel, 0.5mm ... treament. Acid washing,phosphorizing and coating with powder.3. Knock-down structure, easy to assemble.4. Various colors and sizes are available ... ,please contact us,we'll reply you asp! Home steel 3-door locker