Homey Pet 43" Stackable or Non-Stackable Heavy Duty Cage W/Feeding Door, Casters and Tray Order Included: 12 units of 43" single collapsible cage. Each unit comes with set of wheels allow you to use them individually. Collapsable in box for easy installation by only install the screws Feeding door available for feeding convenience; Open top makes it easier to put your dog/animal in and out Pull out tray for easy cleaning; Lockable casters available for easy moving of the cage Recommended for dogs 50 to 90lbs; may not suitable for small pets