This wall mounted cat shelves set includes 7 pieces for climbing, resting and play. The layout includes shelves, perches, jumping boards, cat beds, a hammock and cat tree elements. The listed weight capacity is 40 lb when mounted as directed. Components use 12 mm pine wood, with a square cat house measuring 17.72 x 11.81 x 12.8 in and an oval cat house measuring 19.69 x 12.8 x 11.02 in. The wall-mounted format adds vertical cat furniture while keeping floor area open.