- Freedom & Convenience: Enhance your pets' independence with a cat door designed for easy and quiet access. No more trapping your cats or small dogs; they can come and go as they please, while you enjoy a hassle-free experience without opening and closing doors for them. - Enhanced Safety with 4 Lock Modes: Customize your pet's access with adjustable lock modes. Choose from free access, full lock, exit only, or entry only to prevent stray animals from entering your home while giving your pets the freedom they deserve. - No Tunnel Required: The door features a slim 2 cm thick panel for easy installation on windows, wooden doors, or sliding glass doors. Its outer dimensions are 19.7 x 19 cm with a flap size of 17 x 16 cm, accommodating pets with a waist circumference of up to 50 cm. - Durable and Functional Design: Constructed from high-quality ABS plastic, this cat door is built to last. The included sealing strip and alignment magnet effectively keep out insects and odors while minimizing heat loss in winter and cold air loss in summer. Use scenarios: 1. Install the cat door in your sliding glass door to allow your cat or small dog to enjoy the backyard whenever they want, without needing your help. 2. Add the cat door to a wooden door in your home office, granting your pet access during work hours while keeping distractions to a minimum. 3. Perfect for windows, this cat door enables your pets to safely explore the outdoors without compromising your home's security. Experience seamless pet access and enhanced home comfort with this practical cat door solution.