Precision 2920 29106 Rabbit Hutch Multi Plex (33x26 inch) spray collar refill Smart Barking Detection Chip Smart Barking Detection Chip Intelligent barking vibration detection instead of sound detection chip prevents false triggering This is not surprising as Flexi stands for the most enjoyable walk for both pet owner and their best friend 5 simple steps to assemble solid wood frame heavy duty wire mesh panel weather resistant asphalt roof protects from sun and rain adjustable feet for uneven surfaces water resistant adjustable leg pegs includes extra floor panel for stacking or solid wood floor panels for single story back door can be raised and lowered allowing pets to enter and exit the hutch freely when attached to the Multi Plex Play Yard includes a ladder for access to different levels (when stacked) for added protection from the elements a divider panel is included for inside the hutch creating 2 separate spaces (but accessible to each other) optional ventilation panels increase ventilation in warm weather and keep Hutch warmer in cold weather Precision Rabbit Multi Plex Hutch: Designed to attach to additional rabbit Multi Plex Hutch and Play Yards the Rabbit Multi Plex Hutch offers multiple configuration options