XLarge Dog Door for Sliding Glass Doors, Adjustable 75.39" to 81.3" Slider Height, Extra Large Dog Door for Sliding Glass Door, All-Metal Framed & Lockable Panel

Adjustable Height: The Xlarge doggie door for the sliding door frame adjusts from 75.39" to 81.3" in height. | Note:Fits vinyl slider tracks with 1-1/4" or greater track width. | Sense of security:Come with 1pcs panel that can slide up and down and be locked,offer your pets the freedom to explore the outdoors while keeping your home secure and comfortable with the Pet Door. | Perfect for XLarge Pets: The semi-transparent flap of the pet door for sliding glass doors, measuring 23.54 H, offers a clear view and easy access for pets up to 200 pounds. | Note:To ensure the correct height, measure from the top track to the inner bottom track of your aluminum sliding door frame.