This sliding glass dog door is designed for patio doors with an adjustable height range of 75 7/8" to 80 11/16". The aluminum alloy frame provides stable support, while the tempered glass panel integrates with existing sliding door systems. The 10 1/4" x 16 1/4" flap offers convenient access for small to medium pets. A built-in locking mechanism and rotating hinge design help support controlled en