What Size is an Extra Large Doggie Door? Explained

As a pet owner, ensuring the comfort and well-being of your furry friend is paramount. When it comes to providing your canine companion with the freedom to move in and out of your home, a doggie door can be a game-changer. 

For owners of larger breeds, such as Great Danes, Saint Bernards, and Mastiffs, selecting the right size for an extra large doggie door is crucial. In this guide, we’ll delve into the world of extra large doggie doors, covering their importance, key considerations, and how to find the perfect fit for your furry family member.

The Significance of Extra Large Doggie Doors

A doggie door serves as a gateway for your dog to enjoy the outdoors while maintaining their independence. For larger breeds, it’s even more vital, as they require ample space to pass through comfortably. 

These breeds tend to have more energy and might need to go outside more frequently. An extra large doggie door not only provides convenience for your pet but also relieves you from the constant task of letting them in and out.

Key Considerations for Choosing the Right Size

Measure Your Dog: Before selecting an extra large doggie door, accurately measure your dog’s height and width. Remember to measure from the top of their shoulders to the bottom of their chest for the height, and from the tip of their nose to the base of their tail for the width. 

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This ensures that your furry friend can move through the door with ease, preventing any potential discomfort or injury.

Allow for Growth: If you have a puppy or a young dog that’s still growing, consider their potential size as an adult. Opt for a doggie door that can accommodate their future dimensions, saving you the trouble of replacing the door in the near future.

Frame Size vs. Flap Size: When choosing an extra large doggie door, take note of both the frame size and the flap size. The frame size refers to the dimensions of the entire door, including the frame surrounding the flap.

The flap size is the actual opening your dog will pass through. Ensure that both sizes are appropriate for your dog’s measurements.

Insulation and Security: Along with size considerations, pay attention to the insulation and security features of the doggie door. A well-insulated door helps maintain the temperature within your home, while security features such as locking mechanisms prevent unwanted intruders from entering.

Finding the Right Fit 

Browse Reputable Brands: Research and explore reputable brands that specialize in pet doors. Look for reviews and testimonials from other pet owners, especially those with large breeds, to gauge the quality and durability of the products.

Consult Size Charts: Many doggie door manufacturers provide size charts that correlate specific dog breeds with appropriate door sizes. While these charts are helpful, remember that individual dogs within the same breed can vary in size. Use them as a guideline rather than a definitive measurement.

Customization Options: Some brands offer customizable doggie doors that can be tailored to your dog’s specific dimensions. This option might be particularly beneficial if your furry friend falls between standard size ranges.

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Installation and Maintenance

Professional Installation: Unless you’re confident in your DIY skills, consider having the extra large doggie door installed by professionals. Proper installation ensures that the door is secure and functional.

Regular Maintenance: To prolong the life of your doggie door, perform regular maintenance. Clean the flap, frame, and any moving parts to prevent debris buildup that could impede your dog’s movement.


An extra large doggie door can be a wonderful addition to your home, granting your larger furry friend the freedom they deserve. Remember that selecting the right size involves measuring your dog accurately, considering potential growth, and assessing both frame and flap sizes. 

By taking these considerations into account, browsing reputable brands, and ensuring proper installation and maintenance, you can provide your canine companion with a comfortable and convenient entryway that caters to their size and needs. 

Embrace the joy of watching your pet move effortlessly between the indoors and outdoors, enhancing both their quality of life and your own.