The ITORI 48 inch XXL Heavy Duty Metal Dog Cage Kennel Crate and Playpen for Training Large Dog Indoor Outdoor is a heavy duty crate that is perfect for training large dogs. This crate features an upgraded 20-gauge steel frame and reinforced 0.5 inch diameter steel tubes that make it much stronger than fine wire cages. It also has double doors and locking casters that allow you to easily move the crate around. The removable plastic tray helps you to catch fallen dog food and excrement, and the frame is treated with a multi-layer hammer-tone coating that helps the crate stand up to rust, corrosion, scuffs and scratches.