The York planter is specially designed for easy positioning of heavy cultivation pots. A fully removable side wall and a smooth base allow pots to be slid effortlessly into place. The York corten steel planter has a bold and warm look, thanks to the orange-brown patina on the metal. This patina is formed by a natural layer of rust. Another name for corten steel is weathering steel: weather conditions have a positive effect on this planter. Corten steel is a metal alloy made by adding copper, phosphorus, silicon, nickel and chromium to iron. When exposed to air, the material forms a protective layer of rust. This natural coating prevents further corrosion, extending the planter's life. 5-year guarantee. The planter has drainage holes. Corten steel planters are very robust, hard-wearing, weatherproof, low-maintenance and durable. The corten steel has a standard thickness of 3 mm. Products are delivered without rust. The corten steel rusting process takes about 4-5 months, depending on weather conditions.