The award winning Endura Flap kennel pet door is the most energy efficient kennel mount on the market, It also is highly wind-resistant, has completely hidden hardware, has beefy aluminum extruded framing, is thoroughly built to last and backed by a superior 10 year warranty, with 15 years on the flap, 100% designed, engineered and manufactured in the USA, Dimensions: 28 inches L x 6 inches H x 16 inches W SKU: PTPC100