Doggy Door for Sliding Glass Door, Adjustable Height 75 4/5" to 80 3/10" Sliding Door Dog Door Insert, Suitable for Small Doggies Up to 25 lbs, M

Designed for Medium Pets - The dog door flap measures 8" x 12 2/5" (203.2 x 314.9 mm), providing a spacious and comfortable passage. Perfect for small dogs and cats, this size ensures easy access. | Adjustable Height Flexibility - Customize the fit with a versatile height range of 75 4/5" to 80 3/10" to match various sliding door tracks. Ensures a secure, snug installation while providing comfortable access for pets | Durable Aluminum Frame - Built with robust white aluminum construction, this doggie door withstands daily use and weather elements. Sleek design blends with your décor while maintaining full sliding door functionality | Reliable Construction - Engineered as a sliding door insert, this solution preserves home security. The sturdy frame locks into existing tracks to prevent gaps, enabling pet access without structural compromises | Secure Locking Mechanism: The secure locking design is especially useful at night, when you are away, or in specific situations to keep your pets safe and prevent unauthorized access