Dog Mate 221WD/215/216 Features: -Dog door. -Available in Small, Medium and Large sizes. -Color: White. -Suitable for a wide range of dog breeds. -Weather seal. -Magnetic closure. -Brush strip for weatherization. -Smallhas 4-way lock. -Medium and Large doors contain a 2 way lock. -Super strong lightweight flaps. -Assembly required. -3 year guarantee. Specifications: -Small suitable up to 14 shoulder height (cats, Yorkshire Terriers, Pekinese, Dachshund, etc.). -Overall Dimensions for Small Door: 10 H x 9.25 W x 2 D. -Dimensions for the Small Opening: 9 H x 8.25 W. -Medium suitable up to 18 shoulder height (Cats, Spaniels, Terriers, Poodles, etc.). -Overall Dimensions for Medium Door: 13.75 H x 11.38 W x 2 D. -Dimensions for Medium Opening: 11.75 H x 9.5 W. -Large suitable up to 25 shoulder height (Laboradors, German Shepards, etc.). -Overall Dimensions for Large Door: 17.38 H x 14.38 W x 2 D. -Dimensions for Large Opening: 15.38 H x 12.5 W.