I've had this tree for about six months now and while the height is good, the bottom left flat piece became extremely bent within weeks of my cat using the three.  Then the middle piece (the one that let's cats jump safely from the top to the bottom) completely broke off.  Luckily my cat was not injured when it broke, but it's fairly upsetting that I am going to have to throw away an expensive cat tree after half a year's use.