The Best Cat Doors and Flaps (2021 Reviews)

Skylar Dial
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A lot of stuff has been written about how to stop cat from scratching furniture, how to make sure your cat scratches on his/her post, and what to do to stop your cat spraying, so the chances are I don’t need to tell you that cats can be very destructive to the furniture in your home. However, you may not realize that this is more than just an inconvenience.

An anxious or bored cat that has run out of things to do can put a huge dent in your wallet. Why not take a leaf out of your cat’s book and go on an adventure?

Plenty of products on the market today will help adventurers get the best of their adventures. You need the best bike and helmet, the best adventure backpack, and the best gloves for riding your bike to make things easier for yourself and your cat.

Here we have put together the best Cat Doors and Flaps to make your home a bit more adventurous.

NameCategoryProduct
PetSafe Wall Entry Plastic Pet DoorBest OverallPetSafe Wall Entry Plastic Pet Door
PetSafe Interior Cat DoorBudget PickPetSafe Interior Cat Door
Endura Flap Pet Door Thermo Panel 3e Sliding Door Dog Door Energy Efficient Doggie Door Small Medium Large XL Doggy and Cat Door Patio Insert in White Bronze Brushed Aluminum Frame Sliders 75-96"Upgrade PickEndura Flap Pet Door Thermo Panel 3e Sliding Door Dog Door Energy Efficient Doggie Door Small Medium Large XL Doggy and Cat Door Patio Insert in White Bronze Brushed Aluminum Frame Sliders 75-96"

1. PetSafe Wall Entry Plastic Pet Door

Our rating: 9 / 10

PetSafe Wall Entry Plastic Pet Door

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Pros:

  • Durable plastic – it can take a lot of punishment by your pet
  • Available in two sizes
  • Simple to install; doesn’t require any tools
  • Durable plastic flap

Cons:

  • The locking mechanism can be tricky to lock and unlock
  • The instructions that come with it aren’t very clear

(Medium)

Overall, we think this is an excellent product for the price. It’s easy to install and requires no tools. It’s also sturdy enough to resist your pet’s attempts at escape. The worst thing that could happen is the locking mechanism loosens up, but no big deal your pet won’t escape anyway.

The locking mechanism that comes with it sometimes can be tricky at first, but if you look at the image above you’ll see that there’s an arrow pointing to where the hole aligns with the cutout. If you align the arrows and push the locking mechanism down as far as you can, it should be locked in place. If your package didn’t come with an arrow, then you’ll be able to find it in your instructions.

2. Ownpets Screen Cat Door,Pet Screen DoorInside Door 8x10x0.4 Inch

Our rating: 9 / 10

Ownpets Screen Cat Door,Pet Screen DoorInside Door 8x10x0.4 Inch

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Pros:

  • ‘Magnetic Lock’ and ‘Crash Bar’ security systems for maximum safety
  • Easy setup
  • Good air ventilation, easy to clean
  • Space-saving
  • Ideal for cats and kittens – will fit cats up to 20lbs

Pet Doors.

The Ownpets Screen Cat Door is a basic cat flap that’s designed to fit small to medium-sized cats. It’s very easy to assemble and install. Plus, it has a crash bar and safety lock mechanisms that really add to its value.

The air ventilation is also great – it’s made of high-quality mesh, and the ventilation is adjusted to work in line with your cat’s breathing. The magnetic lock and crash bar mean that this cat door protects your house against any outsiders from outside. Although, you will need to take extra care to ensure that your cat doesn’t accidentally lock themselves outside.

3. Power Pet Electronic Pet Door

Our rating: 9 / 10

Power Pet Electronic Pet Door

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The PowerPet Electronic Pet Door is a medium sized automatic pet door for your dog. It is both simple to operate as well as clean much like the Petmate Deluxe.

It is a bit wider than most pet doors, measuring 6 inches X 7 inches. The door is activated by a collar clipped onto an included electronic box worn by kitty. The door only opens for kitty wearing the collar. The cushioning found on the door not only adds a bit of insulation but it also makes it an ideal pet door for cats.

It comes with two flaps which is a welcome benefit as you can avoid the need to change them out when kitty gets bigger. These flaps are simple to change. the door measures 20 x 13 x 14 inches so finding an appropriate spot for it shouldn’t be too much of a challenge.

4. PetSafe Interior Cat Door

Our rating: 9 / 10

PetSafe Interior Cat Door

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The PetSafe cat door is an excellent choice for pet owners who want to make life more comfortable for their feline family members. The keyhole is just the right size for Felis catus to comfortably walk right through. This cat flap has a soft rubber seal that’s made of special weatherproofing material.

What’s great about this product is that it offers two-door options for pet owners: (1) the 2-way lock flap or (2) the 4-way lock flap. This product also offers four adjustable height settings, allowing your cat to fit through the flap easily.

The PetSafe cat door also comes with a multi-point locking system, which is highly-recommended by most cat owners. This keeps your cat safe from the elements, offers higher security, and makes it less likely that your pet will get lost.

5. Cat Door Built In Interior Pet Door

Our rating: 9 / 10

Cat Door Built In Interior Pet Door

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Pros:

  • Easy to install
  • Passes 16-18lbs of live body weight
  • Great value for your money
  • Saves you time
  • DIY risers included for high interior doors
  • Packaged well
  • Allows free movement in and out of your home
  • Cat feels free to move about as it pleases
  • Great for environments with limited space
  • 3D design allows for unrestricted movement

A few features include:

  • COMPLETE INDOOR AND OUTDOOR PET ENRICHMENT: Simple set up gives you full control of your cat's environment. Your cat can go in and out anytime, no matter if it's too hot or too cold. Helps you save on utility bills.
  • EASY INSTALLATION: Building your home entryway to include a cat door is an easy process and less expensive than you think.

6. The Kitty Pass Interior Cat Door Hidden Litter Box Pet Door

Our rating: 9 / 10

The Kitty Pass Interior Cat Door Hidden Litter Box Pet Door

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Pros:

  • Easy to install and easy to use
  • Lightweight but sturdy enough to handle heavier animals – up to about 22lbs
  • Tighten the screws to keep the pet from pushing in the door when they want to leave and entering in when they want to enter
  • The product will also fit into the hole that was pre-cut to accommodate the insert for the original. pet door.
  • The kitty door is ideal for kittens, small dogs, and for those that are older and may need the extra space

Cons:

  • The installation can be tricky if you do not place it in the right place and measure it correctly
  • If you have a small kitten, they may try to push the door and get stuck in the little hole.

This frame fits in to a pre-cut hole in the door or doorframe to allow your pet to come in and go out on their own terms.

It is a great choice and is a good and safe option for anyone with a new kitten or small dog that you do not know.

The flap is about 14 inches in size and can fit bigger cats and small dogs.

7. PERFECT PET The All-Weather Energy Efficient Dog Door

Our rating: 9 / 10

PERFECT PET The All-Weather Energy Efficient Dog Door

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Pros:

  • A large door for bigger pets
  • Quality construction
  • Versatile door can be adjusted to fit various size doors
  • Relatively inexpensive
  • Includes a keyed lock

8. Ideal Pet Products Aluminum Sash Window Pet Door

Our rating: 8 / 10

Ideal Pet Products Aluminum Sash Window Pet Door

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Pros:

  • Cat door for sliding windows
  • Ideal for large or multiple cats
  • Suitable for 30"-32" sash windows
  • Odorless and seamless design
  • Easy to install and remove
  • PVC-free
  • 6-year manufacturer warranty

The Ideal Pet Products Aluminum Sash Window Pet Door is ideal for multiple- or large-breed cats. If your pet needs more room, purchase the medium size. Another bonus is this cat door is easy to install and remove and won’t damage your window. Reviewers praise this product for its practicality and workmanship. While the Idel Pet products cat door isn’t cheap, it’s a great investment in your pet’s health and happiness.

9. Depets Large Cat Door

Our rating: 8 / 10

Depets Large Cat Door

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Our top pick is the Depets Pet Door for Cats & Doggie.

It’s a high-quality cat door for those who want a reliable pet door without breaking the bank.

It’s big, strong, and made of durable, impact-resistant plastic. The door is black and gray and has beautifully engraved patterns on it. The circular door flap is 8” in diameter and 9.5” tall.

10. Perfect Pet Soft Flap Cat Door

Our rating: 8 / 10

Perfect Pet Soft Flap Cat Door

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Pros:

  • Durable flap
  • Safe and secure locking system
  • Fits various sized doors
  • Inexpensive
  • Easy to install
  • Removable flapper
  • Mat optional – can also be used without one
  • Available in two colors: white and brown
  • A one-year limited warranty
  • Great customer service

Cons:

  • Cat flap is very small, too small for certain breeds
  • Some units have sticky or obnoxiously loud flaps

Fits doors 5-5/8 – 7-5/8" Wide with a 3/4 – 2" Thick Trim.

11. PetSafe Freedom Aluminum Patio Panel Sliding Glass Pet Door

Our rating: 8 / 10

PetSafe Freedom Aluminum Patio Panel Sliding Glass Pet Door

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Pros:

  • Affordable
  • Easy to install
  • Durable
  • Sturdy adjustable door flaps
  • Your pet can’t enlarge the hole, unlike regular pet doors
  • Quick and easy exits for either cats or dogs

Cons:

  • The door does require having to reposition yourself once the door frame is installed
  • –A slight modification is required on the left hand side of the door. We found you need to take a chisel and slightly trim the top piece inside the jamb so that the lock can move freely when you close the door.
  • –The door does open away from the sliding door. This allows your dog to easily see the light inside the house once it’s installed.
  • The PetSafe Freedom Pet Door is a great alternative to a traditional pet door for your sliding glass door. This is especially the case if your sliding door frames only measure 30 inches high. It works perfectly with doors up to 44 inches high and 30 inches wide.

We couldn’t find this Pet Gate in any pet stores but we did find it on line. You can also take a look at the different colors available for this model (gray, tan, white, mahogany and bronze).

12. Perfect Pet Tubby Kat Cat Pet Door

Our rating: 8 / 10

Perfect Pet Tubby Kat Cat Pet Door

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Pros:

  • Made from high density, shatter-proof Plexiglas
  • Fits standard pet doors
  • Simple to install
  • Weather resistant
  • Easy to clean
  • Allows multiple cats to get in and out of the house
  • Four way lock
  • Fits doors up to 2” thick.
  • Two years warranty
  • Made in USA

Cons:

  • Annoying buzzing sound when it’s locked
  • The magnet doesn’t work as well as it should
  • Can’t be used with pet doors under 7.5 inches

This isn’t your ordinary cat door, it’s transparent! The Perfect Pet Tubby Kat Cat Pet Door with 4 Way Lock, 7.5” x 10.5” Unbreakable LEXAN Flap allows you to have a pet door without a big hole in your door. The clear door matches your regular door, making it virtually undetectable.

13. PetSafe Interior and Exterior Cat Door

Our rating: 8 / 10

PetSafe Interior and Exterior Cat Door

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Pros:

  • Big and small can fit through
  • Privacy panel
  • Durable

PetSafe cat flaps are far and away the best quality you're going to find. These bins don’t require a hole cut into your door, but actually fit over them.

This is good for people with patio doors without glass, as it can be a struggle to cut the door with special tools.

They also come with a privacy clip, so your cat doesn’t feel uneasy when they have to go out at night.

14. PetSafe Extreme Weather Door

Our rating: 8 / 10

PetSafe Extreme Weather Door

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The most notable feature of the PetSafe Extreme Weather Door is its ability of letting in cats (and other pets) even in bad weather conditions.

This means that it’s entirely suitable even for cats that find themselves outdoors often – whether they’re strays, or if they’ve simply been let out by their owners.

It can also accommodate well large cats. Now, even if you have to take them in at your home, you can make sure they’ll be safe and happy.

15. SureFlap – Sure Petcare Microchip Cat Flap

Our rating: 8 / 10

SureFlap - Sure Petcare Microchip Cat Flap

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And Exit of Pet's Home, Holds up to 25 Cats' Microchips, Tracks Pet's Daily Activity with Hidden In-Pet Door Video Camera, Sounds Alarm If Weigh Pet Exceeds Acceptable Weight, Adjustable to Accommodate Different Sized Pet's.

The majority of the SureFlap Microchip Cat Flap reviews are very positive. According to the vast majority of the customer reviews, the SureFlap is easy to install, it works as advertised, and it provides accurate details about when your pet and when they pass through the flap.

The other major benefit of the SureFlap is that you will not have to purchase new collars every time you add another pet to your home or if your pet's collar is lost or it becomes too small.

16. PetSafe Plastic Pet Door

Our rating: 8 / 10

PetSafe Plastic Pet Door

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Pros:

  • * Variety of sizes – from 2.5‒ to 36‒
  • * Comes with a flexible soft tinted flap * Pet panel is waterproof * Pet door can be installed in both wood and metal doors * Installation comes with a lifetime warranty * Free replacement silicone

Cons:

  • * Doesn’t come with a mounting template * Cats can learn how to push the flap out and go through the side

PetSafe Plastic Pet Doors are sure to keep your home clean and tidy. This kit includes everything you need to install the pet door: the pet door, the flapper, and the door frame. There’s also a locking mechanism for added security, but you can easily turn that off if a cat is learning how to use the door.

Of course, there is a variety of sizes available for different sized pet. Refer to the chart below for dimensions and size.

Installation is extremely easy. All you need is a drill, screwdriver, a step ladder and a pencil to mark where you’re going to drill. Although there’s a template included in the package, we recommend installing the door according to your pet’s size.

17. PetSafe Interior and Exterior Cat Door

Our rating: 8 / 10

PetSafe Interior and Exterior Cat Door

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Pros:

  • Big and small can fit through
  • Privacy panel
  • Durable

PetSafe cat flaps are far and away the best quality you're going to find. These bins don’t require a hole cut into your door, but actually fit over them.

This is good for people with patio doors without glass, as it can be a struggle to cut the door with special tools.

They also come with a privacy clip, so your cat doesn’t feel uneasy when they have to go out at night.

18. Endura Flap Pet Door Thermo Panel 3e Sliding Door Dog Door Energy Efficient Doggie Door Small Medium Large XL Doggy and Cat Door Patio Insert in White Bronze Brushed Aluminum Frame Sliders 75-96"

Our rating: 8 / 10

Endura Flap Pet Door Thermo Panel 3e Sliding Door Dog Door Energy Efficient Doggie Door Small Medium Large XL Doggy and Cat Door Patio Insert in White Bronze Brushed Aluminum Frame Sliders 75-96"

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Pros:

  • Can be custom-sized
  • Doesn’t require any tools for installation
  • Energy efficient
  • Stress-free to install – no need to be a professional
  • The lockable setup keeps the bad guys out

Cons:

  • Doesn’t come with step-by-step instructions
  • Need to be careful when screwing in the flap
  • For best results, you need to trim to size

(patio Panel)

19. Ideal Pet Products 80" Fast Fit Aluminum Pet Patio Door

Our rating: 8 / 10

Ideal Pet Products 80" Fast Fit Aluminum Pet Patio Door

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The Ideal Pet Products fast fit pet door features a 3-second quick-snap latch, so you can get your pet in and out faster. This is particularly useful if you have multiple pets that like to play outside and will rush in and out of their pet door.

This pet door comes with everything you need to get it installed. So you don’t need to make any extra purchases. It also comes with a lifetime replacement guarantee. However, note that the flap may need to be replaced after your pet has been using it for a while.

The pet door is mostly made with steel, which gives it the added durability it needs. Plus, steel has good insulation when compared to other materials, so your pet will remain warm in the cold and will stay cool in the heat.

20. Mythfly Cat Door

Our rating: 8 / 10

Mythfly Cat Door

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Pros:

  • Heavy duty
  • Wide, with a width of 9.9" and a height of 7.2"
  • 4 ways of locking
  • Cat-flap for interior doors
  • 100 percent waterproof, as it is completely airtight
  • Fits in almost any standard size interior door
  • Easy to install and remove as needed
  • Adjustable and removable mounting brackets readily fit in doors without a standard sizing template
  • Comes with a "how to install your pet door" instruction manual
  • Ideal for smaller cats

Cons:

  • Ok for smaller dogs but not much bigger
  • Issues with the latch since you need to have the right size for the cat to use the flap
  • May not fit the door dimensions when closed
  • There are instances of breakage
  • The lock may not be strong enough

What You Will Get from This Cat Door Flap:

The Mytrfly Cat Door is a high-quality, easy and secure way of allowing your pets go in and out of your home without damaging your doors and walls. It's the ideal fit for all standard interior doors.

21. LYNX Cat Door

Our rating: 7 / 10

LYNX Cat Door

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If you’re looking for a cat door to give your bathroom a makeover, this is a great option. It requires no cutting and can be installed in hard and soft surfaces (even glass). The soft coated door flap is water and weather proof, so there’s no chance of leaks or weather damage. A few reviewers mentioned that the door flap was a little hard to cut to slot it into place. However, one reviewer mentions that cutting panels on the other side of the door helped prevent the door from shifting out of place.

22. Ideal Pet Products Aluminum Modular Pet Patio Door

Our rating: 7 / 10

Ideal Pet Products Aluminum Modular Pet Patio Door

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Pros:

  • Ease of installation
  • Looks great and blends well with your garage door
  • It can be adjusted to fit different height doors
  • Perfect for cats and dogs
  • Great to keep your pets safe
  • Easy to clean
  • Velcro attachment is strong and reliable
  • Secure and weather-proof
  • Mahogany finish
  • Great price

Cons:

  • The black flap appears to be fake
  • The small section at the bottom is hard to clean
  • The instructions are vague
  • The velcro doesn’t stick as well as it should

Overall, the Ideal Pet doors are great for your pets and keep them safe. They’re also easy to clean and the price is very affordable.

23. Cat Door

Our rating: 7 / 10

Cat Door

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The Cat Door – The Original Cat Hole has an aperture of 95mm, which means that it has a convenient size that most domestic cats can easily fit through. This cat door can also be used for dogs up to 18 pounds and small dogs. It’s available in white and black, so you’ll most likely have an option for your home.

This cat door feature a brush built into it so you can clean and groom your cat. It’s a feature only unique to this cat door and one that will make your bathing job easier.

The pack comes with an installation hardware that’ll be able to fit either 1/2-inch or 19mm plywood and includes a brush. The head needs to be a flat head, which you can purchase separately.

24. Ani Mate Cat Mate 4 Way Locking Cat Flap

Our rating: 7 / 10

Ani Mate Cat Mate 4 Way Locking Cat Flap

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Pros:

  • Key features of this cat flap include: brushless motor with triple switch control, red/green/blue LED light to indicate entry/exit, pause button to temporarily stop the motor, manual lock with door liner, and sturdy ABS plastic panel.
  • These features make this unit very controlled and secure for cats.
  • The lock detail of this unit is very durable and light weight, so the flap won’t feel heavy.
  • The lock feature of this cat flap is very easy to use. This feature would keep kitty in or out.
  • This cat flap can be installed in all sorts of doors, including glass, wooden, and metal.
  • This cat flap is perfect for larger pets, about 5 to 12 pounds.

Cons:

  • This cat flap does not come with an outer cover.
  • The interior side of this cat flap is not waterproof, which is not good for wet paws.
  • This cat flap requires electricity. The battery option is not available.
  • The products are known to be having issues with the motor, when it is force close.

6 X 4-Inch.

25. SureFlap Microchip Pet Door

Our rating: 5 / 10

SureFlap Microchip Pet Door

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Pet doors are a great way to ensure that your cat or dog has access to the house without compromising security.

SureFlap doors are equipped with a microchip, a magnet, and a sound sensor. The flap opens when your pet comes near it, and it closes automatically when you leave the home. There are three settings – open, locked, and adjustable, and it’s up to you to adjust them. For instance, with the adjustable option, you can set the opening height to accommodate the height of your cat/dog.

Frequently Asked Questions (FAQ)

What is the best type of cat flap to buy?

I would say the best type of cat flap is a magnetic cat flap. They are easy to get in and out of, and if you use a code you can let your cat have a bit more freedom in and out through the flap without them getting lost.

What is the best cat door?

When we had our cat Leo, we didn't have a cat flap and had to open the window for him. Later we bought the PetSafe cat flap and now Leo comes and goes as he pleases. Given seeing that we're out and about throughout the day, it's incredibly convenient so we can leave doors closed and know he won't be locked out.

If you're looking to let your cat have more freedom without you having to let it out by opening windows and manually letting it in and out, I highly suggest a cat flap.

Now the tricky bit about cat flaps is that they need to be secure as a cat could potentially exit whenever they want. That's why we bought the PetSafe cat flap as it includes a key so we can lock/unlock when needed.

Do cat flaps weaken doors?

In a word: yes. Cat flaps are designed to be used in conjunction with a pet door or other opening that is acceptable to allow a pet to enter or exit without a door.

However, it is possible to use them in conjunction with any other opening, such as a sliding or patio door that already has a lock on it. But any door that is subject to constant traffic from cats and dogs is going to be weakened.

Cat flaps are a great concept, but the problem is that cats are sometimes allowed to do whatever they want. Such is the case when a cat flap is fitted. Once the cat is in, it is unlikely that the door will ever be shut again. All household members can go in and out when they choose. The cat has it made.

Are cat flaps a good idea?

Cat flaps are VERY beneficial for your cat as long as you set some rules when they first start using it. The most important rule is NEVER let your cat outside unsupervised. Only let them out when you (or another responsible adult) is at home. This will help them from getting hit by a car or even worse, attacked by another cat.

You will also need to block any gaps or holes you can in the house to prevent your cat from getting out. Once your cat gets older, they are less likely to mess around with a cat flap and will be less likely to get out when it is hot or raining.

Conclusion

Help your kitty be a kitty by providing her with the best feline door! There are plenty of cat doors available that allow your cat freedom to go in and out of your home as they please. These are great for homes with indoor-outdoor cats that need a hole in the door to roam outside their home and get some fresh air.

There are cats that are not keen on cats flaps or cat doors and keep getting frustrated with trying to use them. If your cat is one of these, then they will need a non-conventional option. An option that gives them the freedom to go in and out of the home and the ability to check out the world outside while still keeping your home cat free.

Our Recommendation

NameCategoryProduct
PetSafe Wall Entry Plastic Pet DoorBest OverallPetSafe Wall Entry Plastic Pet Door
PetSafe Interior Cat DoorBudget PickPetSafe Interior Cat Door
Endura Flap Pet Door Thermo Panel 3e Sliding Door Dog Door Energy Efficient Doggie Door Small Medium Large XL Doggy and Cat Door Patio Insert in White Bronze Brushed Aluminum Frame Sliders 75-96"Upgrade PickEndura Flap Pet Door Thermo Panel 3e Sliding Door Dog Door Energy Efficient Doggie Door Small Medium Large XL Doggy and Cat Door Patio Insert in White Bronze Brushed Aluminum Frame Sliders 75-96"