Dog Door for Sliding Glass Door 76-80 Inch Adjustable Height, Large Dog Door for Patio Door - Metal Frame, Tempered Glass, Secure Lock

【Adjustable Height Design】: This dog door fits sliding glass doors with a height between 75 7/8" - 80 11/16" (1927 - 2049 mm); easily adjustable to accommodate various door frame sizes; simplifying the installation process for both experienced and novice users 【Durable Construction】: Built with a heavy-duty metal cover, a robust aluminum frame, and tempered glass; this pet door offers superior resistance to weather, impacts, and wear; ensuring long-lasting performance and reliability for years to come 【Secure Locking Mechanism】: Features a secure lock design that allows you to control your pet's access to the outdoors; preventing unsupervised escapes; providing peace of mind when you are away or during nighttime hours; ensuring pet safety 【Spacious Flap Size】: The dog door flap measures 10 1/4" x 16 1/4" (260.4 x 412.8 mm); providing ample space for medium to large-sized dogs to comfortably pass through; facilitating easy entry and exit for your furry friend 【Easy Installation Process】: Designed for simple, tool-free installation; the dog door slides directly into your existing sliding glass door track; making it a convenient and non-permanent solution for renters or homeowners; fitting most standard door tracks