The Sisal Spire is prime real estate for your cat or family of cats! Measuring 63 inches tall, the bottom of this unit is a 2-floor enclosed house area. To allow easy movement between the two floors in the enclosed house, the shelf has a 15x8 opening in the back for climbing back and forth between floors.   This sisal post has two observation decks are provided, the first level being almost a half-circle and the top level being a little smaller and tiered to allow easy access. These are flat, non-lipped platforms.   The standard model comes with tall sisal scratching poles on each side of the enclosed house (as pictured).   Vital Stats:   House: 16 wide x 20 deep Inside floor 15x11x24 high Base: 22x22 Roof: 20x20 Mid Platform 17x15 Top Platform 15x12 (2) 24 sisal scratchers on house standard Overall height 63     Read less