The Ideal Pet Door is designed to provide your pet the freedom to enter and exit your home without your assistance. The Ideal Pet Deluxe Door is an attractive and dependable entry system that you and your pet can rely on. It has all of the benefits of the Original Door and is constructed with high-quality aluminum and includes a thermo-insulated lockout slide. It can be installed quickly through any standard interior or exterior door with easy to follow step-by-step instructions. The Deluxe Door’s telescoping frame will adjust to fit doors of 1/2 In. to 1 3/4 In. thickness and has a floating threshold to ensure a perfect seal when the door is not in use.