Unleash Your Pet's Freedom: Give your pet unlimited access with our large dog door, tailored for interior and exterior doors. With a built-in lock, control access while offering independence. This pet entrance is perfect for large breed dogs, ensuring both their independence and your peace of mind. Built to Withstand Extreme Weather: Engineered with 3 flaps and magnetic seals, our extreme weather doggie door for door keeps homes cozy. The additional metal closing panel offers superior insulation against harsh elements, preserving energy efficiency year-round. Exterior Door Compatibility: Designed for doors 1.2"-2" thick with an adjustable tunnel for easy fit.