VEVOR Adjustable Sliding Glass Door Pet Door With Aluminum Frame

Give your small dog or cat a convenient way to pass through your sliding glass door while you control access with a secure lock.

• Roomy M-size flap: The 8 1/4" x 12 1/4" opening gives small pets a comfortable passage.
• Adjustable fit: Set the aluminum frame between 75 7/8" and 80 11/16" tall to suit your sliding door.
• Durable construction: A metal flap cover, hinged design, and tempered glass window are built for everyday use.
• Simple installation and control: Slide it into your patio door track without tools, then use the lock when you want to limit your pet’s movement.