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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. 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
  4. 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
  5. 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
  6. 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
  7. Large Electronic Type Pet Door in Sand on Fir Colorview
    Large Electronic Type Pet Door in Sand 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
  8. Small Electronic Type Pet Door in Sand on Mahogany Colorview
    Small Electronic Type Pet Door in Sand on Mahogany 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
  9. Medium Mechanical Type Pet Door in Sand on Oak Colorview
    Medium Mechanical Type Pet Door in Sand 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: $36.00
  10. Medium Electronic Type Pet Door in Black on Fir Colorview
    Medium Electronic Type Pet Door in Black 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
  11. Large Electronic Type Pet Door in Black on Mahogany Colorview
    Large Electronic Type Pet Door in Black on Mahogany 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
  12. 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
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classic style flap pet door
1The Easy Way to Measure

To measure your pet’s height, measure from the floor to their shoulders. For the width, measure your pet’s width. To get the best measurements for both, add on a couple of inches to each. You add inches to the height because pet doors aren’t level with the floor and you add inches to the width for comfort and safety. If you have multiple pets, your door needs to be big enough for your largest one.

Labrador retriever using a pet door
2Choosing a Closure

You have a few options when you're choosing the kind of closure for your pet door. You're probably already familiar with simple flap doors, but they aren't your only option. Also available are doors that snap shut for a bit more security and doors with sensors that communicate with your pet's collar. That way, they open only for your pet and not every animal in the neighborhood.

small chow chow dog next to a dog door
3The Info on Installs

Installation can be in the wall or in the door. Installing a pet door in the wall is the most complicated, for obvious reasons. It's simpler to install a pet door within your own existing door, especially if you're fitting one into a screen door or sliding door. Door installations are easy enough to do on your own, but you might want to hire a professional for a wall install.

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This site helped me find local dealers for pet doors. Very very helpful. ​‌​‌”
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My shopping journey was made so much easier by the functions of this site. ​‌​‌”
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My dog loves his new pet door, and I love this site. ​‌​‌”

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