Two sizes:M (suitable for two adult cats): 40cmx45cmx35cm/15.75inx17.72inx13.8inL (suitable for three adult cats): 41cmx55cmx37cm/16.14inx21.7inx14.6inNote that the above sizes are all flat sizes because they are foldable the size will vary from person to person after unfolding and it will be reduced by 2-5cm from the original size. Due to manual measurement please allow a measurement error of 2-3cm Packing specification：Cat Houses for Outdoor x1