The exit ramp is compatible with all Ferret Nation and Critter Nation cages. The ramp includes a fun purple / teal polyester cover that adds flair to your cage and more importantly protects your pet's feet as they roam up and down the ramp. This is a single ramp designed as an exit ramp for your Ferret cage. Please note the ramp covers (models NA-RC1 & NA-RC3 fit the standard ramps that come with the Ferret Nation or Critter Nation cages but do not fit this exit ramp (model 142EXRMP). Each exit ramp measures 25L x 5.5W-inches & comes with a 1-Year Manufacturer's Warranty. If you have any questions about our Ferret Nation & Critter Nation accessories our customer service department would be glad to help you. MidWest customer service can be contacted at: 1-800-428-8560, available 9:00 AM - 4:00 PM, Monday - Friday.