The K&H Pet Products Hangin' Cat Condo Gray is available in two sizes, the modest 3-story Cat Condo and the 5-story High Rise Cat Condo. The High Rise is the ultimate for fun and relaxation. Designed with mesh windows on two levels of the five levels allows cats to look out. The incredible space-saving design simply attaches to any door. No more valuable floor space is taken up by bulky cat trees and cat furniture. The 3-story Condo is not only beautiful but is also functional. With top and bottom straps to securely lock the condo in place, it provides rigid security for your cat’s most ambitious playtime. A mesh window on the middle level allows cats to look out. This 3 story Hangin’ Cat Condo also was designed with a comfortable lounging or sleeping surface on the top. Designed by K&H with OVER 20 years of experience in creating safe, innovative, quality products for pets.