Love these cat trees! Big hit with our kitties! We placed them back to back and have secured them together for added support we have large adult cats that like to barrel run up cat trees. My husband put both of these together in less than 30 mins. Were very pleased with this purchase. Just moved to AZ. Currently in a short-term rental apt while we house shop. Once weve moved into our new home, Im definitely purchasing a couple more trees from Wayfair. Im very happy, as are the kids! Thank you Wayfair!