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

Sliding glass dog door insert gives large pets easy in-and-out access without permanent changes, while keeping your patio door secure. Adjustable height from 1927–2040 mm helps it fit common sliding door frames, making it a practical choice for renters. Built with an aluminum alloy frame and tempered glass, it’s designed for daily use, with a wide flap opening and a simple lock to manage pet access when needed.

• Fits adjustable patio door frames from 75 7/8–80 11/16 in (1927–2040 mm) for a tailored install


• Delivers a spacious flap opening for large pets: 13 5/8 x 23 5/8 in (346 x 600 mm)


• Installs quickly by sliding into the door track—no tools required, ideal for rentals and seasonal setups


• Secures access with a button locking mechanism to restrict pet movement at night or when away


• Supports long-term use with aluminum alloy frame, tempered glass panel, and metal rotating hinges

Keep your home’s look and function intact while giving your dog or cat a dedicated entry point. The slim insert profile sits in the patio door track and pairs a durable metal-and-glass build with a convenient locking design to help control when pets can go out. Choose the XL flap size if your pet needs extra clearance, and use the included installation fixtures and panel fastener for a stable fit. Grab yours today to simplify daily potty breaks and reduce door scratching and interruptions.

• Type: Sliding door pet door insert (XL)


• Adjustable door height: 75 7/8–80 11/16 in / 1927–2040 mm


• Overall dimensions (L x W x H): 80.31 x 17.52 x 0.79 in / 2040 x 445 x 20 mm


• Flap (W x H): 13 5/8 x 23 5/8 in / 346 x 600 mm


• Materials: Aluminum alloy frame; tempered glass panel; metal rotating hinges


• Color: Brown


• Net weight (with accessories): 22.6 lb / 10.25 kg


• Flap hardness: 65–70HA


• Includes: Metal panel fastener, precise installation fixtures, button locking mechanism