I can't get over how fast my order was delivered.  I had to assemble the tower myself.  I must say, It was quite easy.  The only problem I had at the time of assembly, was keeping the cats off it as I was assembling it.  Carpet is not that thick, but if weather conditions are hot, keeps cats cool.  I have 6 cats taking turns on the tower.  They are happy, and so am I.