Four tiers rise to 56 inches inside this black cage, splitting the space into sleeping, playing and feeding zones so one to four cats can share it without living on top of each other. The footprint measures 43 by 29 inches and each panel is rated to 11 lbs. A lockable skylight opens from above for reaching in, and four lockable doors give access at every level. Three ladders and a soft hammock connect and furnish the levels. PP panels join with secure clips and the included zip ties, so the cage assembles and comes apart without power tools and can be reshaped when it moves to a different room. The modular layout also means a single tier can be dropped or added as the household changes. Assembled it weighs 33 lbs and a hammer is included for the fixings.