The SMONTER 46″ Strengthened Heavy Duty Dog Crate is made of high-quality materials that are designed to last. It features a sturdy metal frame that is resistant to rust, corrosion, and scratches. The crate also has two PATENT locks with safety buckles to prevent the dogs from opening the door and escaping. The crate also has a removable plastic tray that is easy to clean and move. The crate ships flat to your door and is easy to assemble.