A Complete Buyer’s Guide to Dog Doors

If you own a dog, the idea of installing dog doors may be particularly attractive. They can allow your pet to enter or exit your home on their own, without you having to get up and open the door for them. This is particularly convenient if you are out and about during the day, as your dog won’t have to wait for your return to spend some time outside.

Most dog doors are installed in specific locations in your home, such as:

  • Traditional Exterior Doors
  • Sliding Doors
  • Walls
  • Windows

This means that nearly anyone has a property that can support a dog door, as long as it is installed properly. In some cases, professional installation may be required, depending on your personal comfort level and the availability of the necessary tools.

cute pug puppy laying down
russell terrier standing in front of a pet door

Installation

The majority of dog doors are designed to be installed in a traditional exterior door. Usually, this involves cutting a hole for the dog door to sit in and attaching the frame to the door itself. Depending on the exterior door’s construction, some homeowners may feel confident managing this task on their own by following the manufacturer’s instruction, though others might benefit from professional installation services.

Generally, sliding glass door insert dog doors can be installed by nearly anyone, though it may take two people to do so safely. Dog doors designed to go through glass or exterior walls likely necessitate a professional installation based on the complexity of the task and risks associated with improper installation. If you are considering hiring a professional, understand that this cost will be above and beyond the purchase price of the door, so factor that into your budget.

beagle dog walking through a pet door

Sizing

When you buy a dog door, its crucial that it be the proper size. Most dog doors are manufacturers in four main sizes, ranging from small to extra-large. However, the exact dimensions of the dog door may vary from one manufacturer to the next, so it is vital first to measure your dog and compare their size to the dimensions of the opening before purchasing a particular dog door.

If your dog is still a puppy, then you may want to buy a dog door based on their anticipated size when they are fully grown. Otherwise, you could be shopping for a new one faster than you had hoped.

terrier standing half way through a dog door

Security

Many homeowners are aware that installing dog doors could leave their home vulnerable, as placing a large opening between the interior and exterior inherently comes with risk, particularly when the door is left unsecured so that your dog can freely move between the two areas. However, most dog doors come with some security features.

A solid sliding door that allows the opening to be sealed is commonly provided with new dog doors, allowing you to shut the opening with a strong material, like metal. You can also find versions that feature electronic locks and a special collar. On these models, the dog door only releases when that collar is within a predetermined proximity, limiting the chance that another animal or an intruder can enter through the opening.

Dog Doors

Dog Doors

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  1. Large Flap Type Pet Door in Beige on aluminum Colorview
    Large Flap Type Pet Door in Beige on aluminum Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $54.97
  2. Small Flap Type Pet Door in Beige on Cedar Colorview
    Small Flap Type Pet Door in Beige on Cedar Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $64.89
  3. Medium Flap Type Pet Door in white on aluminum Colorview
    Medium Flap Type Pet Door in white on aluminum Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $64.89
  4. Large Flap Type Pet Door in Sand on aluminum Colorview
    Large Flap Type Pet Door in Sand on aluminum Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $54.97
  5. Small Flap Type Pet Door in Blue on aluminum Colorview
    Small Flap Type Pet Door in Blue on aluminum Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $54.97
  6. Medium Flap Type Pet Door in Black on aluminum Colorview
    Medium Flap Type Pet Door in Black on aluminum Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $54.97
  7. Small Mechanical Type Pet Door in Black on Oak Colorview
    Small Mechanical Type Pet Door in Black on Oak Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $48.00
  8. Large Mechanical Type Pet Door in Sand on white Colorview
    Large Mechanical Type Pet Door in Sand on white Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $55.00
  9. Medium Electronic Type Pet Door in white on Fir Colorview
    Medium Electronic Type Pet Door in white on Fir Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $49.99
  10. Medium Mechanical Type Pet Door in Beige on Oak Colorview
    Medium Mechanical Type Pet Door in Beige on Oak Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $49.99
  11. Large Mechanical Type Pet Door in Beige on white Colorview
    Large Mechanical Type Pet Door in Beige on white Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $35.58
  12. Small Electronic Type Pet Door in Blue on Fir Colorview
    Small Electronic Type Pet Door in Blue on Fir Color
    Pets Unlimited pet doors are the ultimate option for your dog or cat. They can be installed in doors, windows, or even walls, and will fit any opening. Multiple design and security features are available to ensure your some stays safe while your pet enjoys increased mobility and freedom. Choose from a wide variety of sizes, shapes, and colors to match your home. Is your pet microchipped? Security options include a microchip reader so no other animals can access your house. Installation is a snap, and professionals are available to help you. An industry-standard warranty will keep your door and house in good working order for decades to come. Choose from among a wide variety of flaps to match your home’s energy efficiency needs.
    Price: $49.99
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