CATS UP TO 7kg (15lbs) AND SMALL DOGS UP TO 3kg (7lbs) e.g. Maltese, Chihuahuas, Yorkshire Terriers, Miniature Dachshunds, Toy Poodles, Pomeranians Woodgrain finish with see-through rigid flap. Manual 4-way security lock: in only - out only - opened - locked. Operated by magnetic collar key. Helps keep out strays. Supplied with one collar key and Staywell collar. Universal fitting for windows and doors. Overall size 24.1 x 25.2 cm Opening size 15.0 x 16.0 cm Maximum shoulder width 15.0 cm