SMART DOG DOOR - Plexidor smart dog door is designed for dogs up to 125 pounds and framed to fit a standard exterior house door. The dog door ensures a more high-end and built to last solution. HIGH TECH - Utilizes state-of-the-art smart labels for secure instant access to your furry friend. Check-in and check out are only possible for pets with collar-safe keys. HIGH PERFORMANCE - With Plexidor's electronic dog door, you can enjoy high energy efficiency, peace of mind, and high performance, while giving your pet easy access to the outdoors. QUICK AND SIMPLE - Our electronic dog door can fit into various exterior doors (stud, brick, block, or cement) up to 12 inches thick, making it a quick and simple large doggy door. AMERICAN MADE - An American-made pet door, the PlexiDor comes with a 5-year home warranty and a 90-day money-back guarantee, ensuring peace of mind and making it long-lasting.