Premium Plus A-Frame Dog House by Ware Manufacturing This premium dog house is contructed of solid fir wood. It has waterproof shingles, a peaf-roof design, and adjustable waterproof feet. All you will need for assembly is a screwdriver and a few minutes. Fir Wood Construction Waterproof Shingle Roof Peak Roof Design Adjustable Waterproof Feet Assembles with only a screwdriver Sizes: Small Outside dimensions – 29.25W x 28.5D x 30.5H Inside dimensions – 22″W x 24″D x 21″H Door opening – 9.5″ x 14″ Door flap – 9.5″ x 14.5″ Breed Recommendations – Maltese, Shih Tzu, Dachshund, Chihuahua, Pomeranian, Silky Terrier Medium Outside dimensions – 30.75W x 34.75D x 32.5H Inside dimensions – 25.5″W x 31.5″D x 27.5″H Door opening – 12.5″ x 16″ Door flap – 12.5″ x 17″ Breed Recommendations – Beagle, Cocker, Lhaso Apso, Terrier, Mini Poodle Large Outside dimensions – 32W x 39.75D x 32.25H Inside dimensions – 26″W x 31.25″D x 35.5″H Door opening – 12.5″ x 16.5″ Door flap – 12″ x 17.75″ Breed Recommendations – Bulldog, Chow, Dalmatian, Lab, Golden Retriever, Rottweiler, Setter XLarge Outside dimensions – 37.75W x 44.25D x 41.25H Inside dimensions – 34.5″W x 31″D x 37″H Door opening – 15″ x 21.75″ Door flap – 15″ x 23″ Breed Recommendations ? Bullmastiff, Great Dane, Greyhound, Newfoundland, St. Bernard