Dog Door for Sliding Glass Door, Adjustable Height, XL Flap Lock

Dog door for sliding glass door keeps your extra-large dog moving in and out while helping block drafts with a better-sealed frame. Designed for renters and homeowners, this adjustable-height patio pet door installs without drilling and fits most sliding door openings. The aluminum alloy frame pairs with a tempered glass panel, while a one-piece PVC flap swings smoothly for frequent daily use. Use the slide-in closing panel and button lock to control access when needed.

• Fits sliding glass doors 75 7/8"–80 11/16" tall (1927–2049 mm) with left or right installation.


• Delivers easy access for XL pets with a 13 5/8"W x 23 5/8"H flap, sized for pets up to 220 lbs.


• Blocks drafts with high-density felt weatherstripping on both sides to reduce hot/cold air intrusion.


• Includes a slide-in closing panel plus button security lock to manage pet entry and exit.


• Enables moving large items through with a 180° swing-open design that opens inward or outward.

Skip flimsy add-ons and choose a sliding glass pet door built for repeat use: a one-piece flap with metal hinges helps deliver smoother swings and fewer snags during busy days. The panel-style design keeps your patio door area looking clean, and the turn-knob height adjustment helps you dial in a tighter fit without tools or drilling. Whether you need a renter-friendly solution or a quick upgrade for a patio slider, this insert is made to install fast and use daily. Grab yours today.

• Adjustable height: 75 7/8"–80 11/16" (1927–2049 mm)


• Flap opening (XL): 13 5/8"W x 23 5/8"H


• Pet size capacity: up to 220 lbs


• Frame material: Aluminum alloy


• Panel material: Tempered glass


• Flap material: PVC


• Opening style: 180° swing-open; inward/outward


• Locking: Button security lock + slide-in closing panel


• Item weight (with accessories): 29.8 lbs / 13.5 kg