Handmade Cedar Dog Houses Available for Pickup In South Surrey. Waterproof, insulated, new and large. Medium Size.................................Large Size Outside..........................................Outside 41" Tall...........................................54" Tall 5' Deep..........................................74" Deep 38" Wide........................................49" Wide Inside.............................................Inside 36" Tall...........................................50" Tall 44" Deep........................................55" Deep 30" Wide........................................41" Wide Opening........................................Opening 16" x 28".......................................19" x 30"