Petsfit 30 X 33 X 37 Inches Wooden Medium Dog Houses,Pet House Outdoor,Painted With Water Based Paint Can hold medium dogs up to 50 pounds,would fit medium dog like Border Collie. Easily assemble with pre-drilled hole(exclude door flap) Inner dimension 24.4"x29.2"x27.4",please refer to the size diagram for more details The overhang roof will protect door opening. Plastic adjustable feet to keep the moisture out,removable floor for easier cleaning