Midwest Critter Nation Add-On UnitAdd more space to your existing Critter Nation Cage and offer more room for your small animal to roam. Midwest Critter Nation Add-On Unit has all the same great features of the Critter Nation Cage. We included full width double doors that provide maximum accessibility for easy cleaning and feeding. The wide expansive shelf and full width plastic pan floor provide a generous play area and prevent dangerous falls. Designed with convenience in mind we've included critter-proof dual-locking door latches that provide secure, easy one-handed operation. Shelves include removable plastic trays for easy cleaning and are height adjustable so you can tailor the small animal cage to your pet's needs. The Critter Nation Add-On Unit also has multiple attaching points for adding hammocks, tubes, toys and other accessories that are sold separately. Includes appropriately angled ramp that is specifically designed to ensure pet safety. Constructed from sturdy square tube frame and wire the Critter Nation Add-On Unit has an attractive gray quartz hammertone finish that is sure to blend with any d‚cor. Best of all the Critter Nation Add-On Unit is easy to assemble and attach to your current Critter Nation Cage - no tools required.Please Note: Critter Nation Cage is sold separately.