Sliding Glass Door Pet Door Insert — XL

A lot of pet doors require cutting into a wall or door (not ideal for renters—or anyone who doesn’t want a big project). I chose this insert because it slides into your existing patio door track with no drilling, while still feeling sturdy and weather-ready. It’s a practical way to give pets freedom without turning your home into a construction zone.

• Tool-Free Installation: slides into most sliding door tracks (no drilling)
• Adjustable Height Fit: telescopes to fit common patio door heights
• Aluminum Frame + Tempered Glass for durability and a clean, home-friendly look
• Weather-Resistant Design helps block drafts and handle seasonal changes
• Locking Mechanism + Metal Security Cover to control access and support routines
• Multiple Flap Sizes to fit cats through large dogs

• Adjustable Track Height Range (All Sizes): 75 7/8"–80 11/16"
• Frame: Aluminum alloy
• Window: Tempered safety glass
• Security Cover: Metal

Available Sizes

• Medium (M) — Cats & Small Dogs
  • Flap Opening: 8.25" W × 12.25" H
  • Weight: 16.3 lbs
• Large (L) — Small To Medium Dogs
  • Flap Opening: 10.25" W × 16.25" H
  • Weight: 17.9 lbs
• Extra-Large (XL) — Medium To Large Dogs
  • Flap Opening: 13.63" W × 23.63" H
  • Weight: 23.1 lbs

• Processing Time: 1-2 days
• Estimated Delivery: 3–10 business days worldwide
• Free Shipping Worldwide: On all orders $35+
• Tracking: Provided with every order

Will This Fit My Sliding Door? Measure your patio door track height. This insert adjusts from 75 7/8" to 80 11/16". If you’re outside that range, it won’t fit correctly.

Do I Need Tools Or Drilling? No—this is designed to be non-permanent and tool-free, sliding into the existing track.

How Do I Choose The Right Flap Size? Measure your pet’s shoulder width and standing height, then choose the flap opening that gives comfortable clearance (especially for larger breeds).