Pet Door, 33.7 x 50.9 cm Aluminum Frame with Lock and Flap System, Weatherproof Doggy Door, Easy to Install in Interior or Exterior Doors, Pet Door Suitable for Cat Doggie Kitties (White-L)Product Features High Quality Materials Built with a sturdy aluminum alloy frame and frosted PVC door flap, this flap pet door is designed to withstand wind, rain, and cold, making it ideal for all weather conditions. It offers long lasting and reliable performance. Fits Various Door Thicknesses Our dog door is suitable for doors with a thickness of 1. 06" 2" 2. 7 5. 08 cm, and it comes with a detailed installation guide and all necessary hardware.