This one took about an hour to put together-directions were awful and no help at all. However, once we got it together we noticed that we had 6 screws left over due to holes not being drilled in various places on the tree-it is still stable enough for the two 8lb cats we have to play and jump on it without me fearing it will tip over. The cats love the tree, especially the hammocks so it was well worth the wait for it to come back in stock :)