The Corkscrew Cat Tree is six feet tall with the top enclosure or five feet tall without. The levels are spaced 20 inches apart at 20, 40 and 60 inches. The ramps are twenty-six inches in diameter, so this is the width of the tree. It is one of the most compact yet versatile trees in the Cloud 9 product line. Its ramps (five inches wide) make it ideal for older cats to climb up to the top and, more importantly, to climb down without having to jump. The cats can sleep inside or on top of the enclosure, making it a true four tier tree for a very small space.