🐾 Let your cat roam free with style! Corrosion-resistant aluminum frame ensures durability for daily use. Transform your space in minutes with just a screwdriver! Four-way locking mechanism for ultimate security and convenience. Choose between small and large flaps to cater to your cat's needs. Adjustable height up to 3 inches for a perfect fit in horizontal sliding windows. Adjustable height Secure locking Easy install The Whiskers & Windows Cat Door is designed for horizontal sliding windows, offering easy installation, adjustable height, and a durable aluminum frame. With two size options and a versatile locking mechanism, it provides both convenience and security for your furry friend.