Add-On Unit. Easy No-Tools Assembly! Easily Maneuverable Stand with Locking Caster Full Width Double Doors Wide Expanse Shelf & Full Width Plastic Pan Floor Multiple Attaching Points for Accessories Gray Quartz Hammertone Finish The MidWest's Ferret Nation, is a complete and feature-filled habitat providing Full-Width Door Openings; one-hand operation Dual Locking Door Latches; Wide Shelves and Full Platform Pans for maximum play area; Swing- Up Locking Ramps that securely separate ferrets for feeding and care, as well as, the very best Fit and Finish - resulting in the finest, long lasting, easy to maintain Quality Home for Your Ferret. All of this PLUS not tools required for assembly! Add-on measures: (36"L x 25"W x 24 1/2"H).