3-Flaps Extreme Weather Dog Door for Exterior Doors, Aluminum Frame and Telescoping Tunnel with Sliding Lock Panel,Suitable for Large Dogs Up to 75 lbs(Large Dog Door for Door)

Extreme Weather Dog door: This dog door features 3 flaps, designed to effectively withstand extreme weather and airflow, providing weatherproof and energy-saving performance. It includes two magnetic-seal vinyl flaps and one insulated middle flap, and comes with a metal closing panel. | ROBUST ALUMINUM STRUCTURE:This doggy door features a sturdy aluminum frame that withstands daily use while being resistant to wear and weather. Its sleek design fits various types of doors and complements your home decor. | EASY INSTALLATION:This doggie door can be easily installed on most exterior doors, interior doors, and walls that are 1 3/16-2 1/4inches thick and made of wood, paneling, PVC, or metal. It includes a cutting template and step-by-step instructions, providing easy-to-follow guidance throughout the installation process. | SUITABLE FOR LARGE PETS: Please measure your dog's size before purchasing. With a spacious width of 10 1/5 inches (approximately 259 mm) and a high height of 16 1/2 inches (approximately 419 mm), it can comfortably accommodate large and medium dog breeds. The opening design of the dog door allows your furry companion to move around easily and enter and exit independently, without having to squeeze through. | Freedom and Security Design: Our large dog door is equipped with a built-in lock, providing independence while controlling access. Our carefully designed large dog door is used as an exterior door, allowing pets to freely pass through while protecting your home.