***FACTORY SEALED***XLarge Dog Door for Sliding Glass Doors, Adjustable 75.39"-81.3" Slider Height, Extra Large Dog Door for Sliding Door, All-Metal Framed & Tempered Glass Lockable Panel Can Slide Up and Down

Additional Details from the Manufacturer

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More features

• Fits vinyl slider tracks with 1-1/4" or greater track width.
• Adjustable Height: The Xlarge doggie door for the sliding door frame adjusts from 75.39" to 81.3" in height, with a glass door width of 18.46". To ensure the correct height, measure from the top track to the inner bottom track of your aluminum sliding door frame.
• Perfect for XLarge Pets: The semi-transparent flap of the pet door for sliding glass doors, measuring 15.16” W x 23.54” H, offers a clear view and easy access for pets up to 200 pounds.
• It includes a safety lock to enhance home security and control pet access.
• 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.