---
product_id: 552862168
title: "3-Flaps Never Rust Extra Large Dog Door for Door with Sliding Lock Panel, Steel Frame and Telescoping Tunnel, Extreme Weather Durable XL Dog Doors for Door (Pets Up to 220 Lbs)"
price: "A$351"
currency: AUD
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.au/products/552862168-3-flaps-never-rust-extra-large-dog-door-for-door
store_origin: AU
region: Australia
---

# Sliding lock panel for secure access 3-flap insulation blocks extreme weather Metal laser-welded steel & aluminum frame 3-Flaps Never Rust Extra Large Dog Door for Door with Sliding Lock Panel, Steel Frame and Telescoping Tunnel, Extreme Weather Durable XL Dog Doors for Door (Pets Up to 220 Lbs)

**Price:** A$351
**Availability:** ✅ In Stock

## Summary

> 🐾 Unlock freedom and fortress-level protection for your XL pet!

## Quick Answers

- **What is this?** 3-Flaps Never Rust Extra Large Dog Door for Door with Sliding Lock Panel, Steel Frame and Telescoping Tunnel, Extreme Weather Durable XL Dog Doors for Door (Pets Up to 220 Lbs)
- **How much does it cost?** A$351 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/552862168-3-flaps-never-rust-extra-large-dog-door-for-door)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Crafted from rust-resistant steel and aluminum alloys with precision laser welding for lasting strength.
- • **Effortless Installation:** Pre-assembled with templates and instructions, fits doors 1.2”–2” thick including wood, PVC, and metal.
- • **Triple-Flap Weather Shield:** Advanced 3-flap design seals out drafts and extreme temperatures for year-round comfort.
- • **Unmatched Security & Freedom:** Keep your pet independent while controlling home access with a robust sliding lock panel.
- • **Fits Large Pets Up to 220 lbs:** Generous XL size accommodates even the biggest furry family members with ease.

## Overview

This extra large dog door features a durable steel and aluminum frame with a telescoping tunnel and a unique 3-flap design that provides superior insulation against extreme weather. Equipped with a sliding lock panel, it offers secure, controlled access for pets up to 220 lbs. Easy to install in various door types, it combines rugged durability with energy efficiency, making it the ultimate choice for multi-pet households seeking freedom without compromise.

## Description

desertcart.com : 3-Flaps Never Rust Extra Large Dog Door for Door with Sliding Lock Panel, Steel Frame and Telescoping Tunnel, Extreme Weather Durable XL Dog Doors for Door (Pets Up to 220 Lbs) : Pet Supplies

Review: Works perfectly! - Very sturdy (metal, not plastic) and easy to install with clear instructions. We just moved to a state where it gets really cold in the winter and this triple flap doggie door has kept my guys nice and toasty with no cold air leaking in. The magnets work great! We actually installed this in a sliding glass door without any issues, doubled up 3/4 inch plywood in the door frame. We also love that it can be locked from either inside or outside. It works perfectly and we're very happy with our purchase!
Review: Super Duper Dog Door - This is an amazing door. Strong, sturdy and the door is absolutely weather proof. It is in my back door, on the west side of my house, with no overhang, with direct storm impact. The thing I like most about this door is that it has no cheesy interior parts and the metal parts meet in the middle. I had installed another one, highly rated and nearly the same price as this one, a month before. I have had many dog doors and this one is superior to any other I have had and worth the price.

## Features

- Freedom and Security: Every pet deserves the freedom to explore their home and be close to their family. Our extra large dog doors with built-in locks ensure your pet's independence while controlling access. Our well-designed xl dog door for exterior doors allow pets to pass freely while protecting your home.
- Upgraded 3-Flaps Design: The 3-flaps design of the extra large pet door provides superior protection from the elements and enhanced insulation to keep extreme temperatures out. This extra large dog door not only insulates against extreme weather conditions and drafts, but also ensures that your home remains comfortable and energy efficient.
- Superior Durability: The xl doggy door is made entirely from metal laser welding process and oxidised high quality steel and aluminium alloys to ensure durability, security and thermal insulation. Advanced welding technology ensures strength, rust resistance and a perfect finish that won't flake. Built to last, this xl pet door is ideal for multi-pet households.
- Easy Installation: Easily fits into wood, PVC, and metal doors ranging from 1.2” to 2” thick. This insulated dog door comes pre-assembled, and includes templates and detailed instructions for a hassle-free installation. This extra doggy door comes with a metal closing panel.
- Intimate Customer Service：MIAOTONG is committed to providing our customers with high-quality products and excellent after-sales service. If you have any questions about this xl dog door, please contact us, we will follow up and solve the problem for you at the first time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #13,235 in Pet Supplies ( See Top 100 in Pet Supplies ) #30 in Dog Doors |
| Customer Reviews | 4.2 out of 5 stars 461 Reviews |

## Product Details

- **Size:** Small
- **Brand:** MIAOTONG
- **Color:** White
- **Closure Type:** Magnetic
- **Mattress Thickness:** 2.16 Inches

## Images

![3-Flaps Never Rust Extra Large Dog Door for Door with Sliding Lock Panel, Steel Frame and Telescoping Tunnel, Extreme Weather Durable XL Dog Doors for Door (Pets Up to 220 Lbs) - Image 1](https://m.media-amazon.com/images/I/715OwmKW63L.jpg)
![3-Flaps Never Rust Extra Large Dog Door for Door with Sliding Lock Panel, Steel Frame and Telescoping Tunnel, Extreme Weather Durable XL Dog Doors for Door (Pets Up to 220 Lbs) - Image 2](https://m.media-amazon.com/images/I/71m57D73A1L.jpg)
![3-Flaps Never Rust Extra Large Dog Door for Door with Sliding Lock Panel, Steel Frame and Telescoping Tunnel, Extreme Weather Durable XL Dog Doors for Door (Pets Up to 220 Lbs) - Image 3](https://m.media-amazon.com/images/I/816+cXLlubL.jpg)
![3-Flaps Never Rust Extra Large Dog Door for Door with Sliding Lock Panel, Steel Frame and Telescoping Tunnel, Extreme Weather Durable XL Dog Doors for Door (Pets Up to 220 Lbs) - Image 4](https://m.media-amazon.com/images/I/81TO3tMt1oL.jpg)
![3-Flaps Never Rust Extra Large Dog Door for Door with Sliding Lock Panel, Steel Frame and Telescoping Tunnel, Extreme Weather Durable XL Dog Doors for Door (Pets Up to 220 Lbs) - Image 5](https://m.media-amazon.com/images/I/81uKozch6VL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Will my dog easily learn to use this dog door?**
A: Most dogs quickly learn to navigate the dog door with some positive reinforcement training. The lightweight flaps are designed for easy access, which means your dog can push through without much effort.

**Q: How does the sliding lock panel work?**
A: The sliding lock panel provides enhanced security, allowing you to control when your dog can enter or exit. This feature is beneficial if you need to restrict access during certain times, ensuring your pet isn’t roaming outdoors unsupervised.

**Q: Is the extra large dog door suitable for all weather conditions?**
A: Yes. 3-flaps design minimizes drafts and heat loss, making it ideal for both hot summers and cold winters. Many pet owners appreciate this feature, as it allows their pet to enjoy outdoor access year-round without compromising home energy efficiency.

**Q: Can this xl dog door be installed in different types of doors?**
A: This 3-flaps dog door for door is versatile and can be installed in various door types, including wooden, metal, or PVC doors. The installation process includes setting the frame properly according to the door material and thickness.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works perfectly!
*by M***A on November 17, 2025*

Very sturdy (metal, not plastic) and easy to install with clear instructions. We just moved to a state where it gets really cold in the winter and this triple flap doggie door has kept my guys nice and toasty with no cold air leaking in. The magnets work great! We actually installed this in a sliding glass door without any issues, doubled up 3/4 inch plywood in the door frame. We also love that it can be locked from either inside or outside. It works perfectly and we're very happy with our purchase!

### ⭐⭐⭐⭐⭐ Super Duper Dog Door
*by D***S on November 22, 2025*

This is an amazing door. Strong, sturdy and the door is absolutely weather proof. It is in my back door, on the west side of my house, with no overhang, with direct storm impact. The thing I like most about this door is that it has no cheesy interior parts and the metal parts meet in the middle. I had installed another one, highly rated and nearly the same price as this one, a month before. I have had many dog doors and this one is superior to any other I have had and worth the price.

### ⭐⭐⭐⭐ Outstanding Customer Service
*by R***L on November 16, 2025*

We got this door back in June for our dogs, but it only lasted 5 months before the screws began to strip out. I contacted the seller, and they quickly responded with a new product and sincere apology. The new door was easily installed and has been working great. Great customer service and hoping the new door will be the answer.

## Frequently Bought Together

- MIAOTONG Thicken Upgrade Cat Door with Security Cover and Magnetic Flap, 4 Way Switch Mode Cat Doors for Interior and Exterior for Pets Up to 22Lb,Strong and Durable Pet Door for Cats, Kitty Door
- CEESC Large Dog Door for Pets Up to 100 lb, Weatherproof Pet Door for Cats and Dogs, Durable, Snap-in Closing Panel Included, Suitable for Interior and Exterior Doors (Large, White)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.au/products/552862168-3-flaps-never-rust-extra-large-dog-door-for-door](https://www.desertcart.com.au/products/552862168-3-flaps-never-rust-extra-large-dog-door-for-door)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-23*