Modular Kennel Cages are the secure, sturdy way to hold pets. Each pet holding kennel is made of secure, zinc-plated, 20-gauge steel. Each cage includes a floor grate and a slide-out floor tray. Available in small, medium and large sizes. Professional enclosed kennel cages at entry level prices! Each Modular Kennel Cage features a slide-out plastic floor tray, a removable floor grate, and a secure latching door.