Give your pet the freedom to roam safely and comfortably with this Dog Door for Sliding Glass Door, designed for easy, tool-free installation and a secure, long-lasting fit in most patio door tracks. Featuring an adjustable height range of 75 7/8"" to 80 11/16"", this Xl pet door seamlessly integrates with a wide variety of sliding glass doors, making it ideal for homeowners and renters alike. The sturdy aluminum frame and tempered glass window create a sleek, durable structure that complements your home decor while withstanding daily use. A spacious 13 5/8"" x 23 5/8"" flap with an upgraded hinge structure provides a smooth, reliable passage for medium and large dogs, even in low temperatures. When needed, the secure locking mechanism lets you easily control your pet's access for added safety and peace of mind, whether you're home, away, or settling in for the night.