SmartDoor Large Fits door thickness 1 1/2" to 2" Product Dimensions - 17 3/8" x 25" Flap Opening Dimensions - 13 1/16" x 15 3/4" Great for pets up to 100lbs

Grant him exclusive access to your home, locking out unwanted visitors. Our award-winning Smart Door recognizes the SmartKey™ tag on your pet’s collar and unlocks the pet door. After your pet has passed through, it re-locks automatically. Additional keys available for other pets.