1220 mm wide × 455 deep × 1800 high Four Tier Polypropylene Coated Steel Shelving Kit with four Vented Shelves and one side only – PSA18/48 Add to PSU shelving kit to create your own shelving solution. Environmentally friendly and rust-free shelving. A revolutionary shelving system that makes storage easy in any environment, wet or dry. Easy to adjust and configure. Easy to clean. Extremely durable, strong and stable.