Top 5 Interior Cat Doors: Reviews & Buying Guide

Does your cat constantly meow at the door, begging to go from the living room to the bedroom? Maybe you are tired of constantly opening doors for your furry friend. Having a cat door for an interior door sounds like a perfect solution for peace and quiet, right? However, choosing the right one can feel like a puzzle. You worry about size, noise level, and how it will look in your nice door.

Finding a cat door that fits perfectly and doesn’t annoy your cat (or you!) takes some thought. We know you want easy access for your pet without creating a big draft or a door that looks strange. This guide cuts through the confusion. We will show you exactly what features matter most.

Keep reading to learn how to pick the best interior cat door for your home and your cat’s needs. We break down the best styles, installation tips, and what to look for so you can finally give your cat the freedom they crave. Let’s find the perfect fit!

Top Cat Door For Interior Door Recommendations

No. 1
Depets Large Cat Door (Outer Size 9.9" x 9.2"), 4 Way Locking Cat Flap Door for Interior Exterior Doors, Weatherproof Pet Door for Circumference < 23"
  • 4 Switching Modes: Depets cat door interior door has four independent models to lock with switches - swing out only, in only, both in and out, and fully locked, easy control of your pet's in and out
  • Applications: Outer size: 9.25" x 9.92" x 2.16"(W x H X D), Inner size: 7.08" x 7.48"(W x H), Cut-Out Size: 7.7" x 8.3" (W x H). This cat door exterior door is for cat lighter than 17.64 lb and waist circumference shorter than 23.62"
  • Easy To Install: Complete instructions included, you can easily install our doggy door in windows, doors, cupboards etc.
  • Thoughtful Design: Transparent flap let pet see through the pet door. Exterior screen is water resistant. Brush strip reduces noise from the door closing
  • Assured Quality: Made of ABS plastic, weather-resistant, the surface of this window cat door is smooth and durable
No. 2
ikuso Indoor Cat Door, Cat Door for Interior Door, Pet Doors for Cat, Kitties and Kittens
  • ღBARRIER-FREE DOOR DESIGNღ: There is no one in the house. Put the cat food in the house. With the cat door for interior door, there is no need to worry about the entry of the dog. The cat can freely go in and out to play, eat and drink!
  • ღSAFE AND DURABLEღ: The indoor cat door is made of ABS material, which is wear-resistant and durable.The edges are smooth and burr-free to protect the cat from being scratched.Smooth line design, paintable materials, perfectly matching your door and decoration
  • ღCompact & Roomy Design: This tunnel features a compact 9.05 in. height and a generous 10.55 in. length, providing ample exploration space. The 6.89 in. internal passage allows for comfortable movement, and it stands steadily on a 2.45 in. wide base.
  • ღAPPLICABLE SCENEღ: The indoor cat door suitable for all hollow doors & solid doors & inner doors,Perfect for laundry rooms, bedrooms, basements, etc.she‘ll have its own activity space , and your home will smell fresh
  • ღNO FALLING OFFღ:The indoor cat door is installed with screws, avoid falling off and gaps caused by tape installation, no noise and no trouble caused by door locks and door damage
No. 3
PetSafe Interior 2-Way Locking Cat Door - Allows Convenient Movement Between Rooms & Minimizes Scratching - Tinted Durable Plastic Privacy Door for Feeder & Litter Box
  • Cat-Only Access Control: The PetSafe Interior 2-Way Locking Cat Door lets you control access to private spaces like litter boxes, pet feeders, or nighttime areas
  • Durable & Pet-Safe Design: Translucent cat flap made from durable plastic minimizes door scratching and keeps dogs, kids, and unwanted intruders safely out
  • Easy DIY Installation: Quick, hassle-free setup with included cutting template, hardware kit, and installation guide fits most interior doors 1.5 - 2" thick
  • Global Mission, Local Care: With U.S. roots and worldwide reach, PetSafe delivers vet- and trainer-recommended solutions and exceptional customer support to create fields of joy for pets
  • 25 Years of Trust: Since 1998, PetSafe has created safe, innovative, and trusted products that bring joy, enhance pet lives, and support the lifelong bond between pets and their families
No. 4
Gnome® Door Cat Door for Interior Doors - Stylish & Functional with No Flap, Lockable, and Easy Installation, Spacious Large Kitty Door for Cats Up to 20 lbs, Private and Comfortable Pet Door
  • (PATENTED) Gnome Sweet Gnome: Our cat door replicates the whimsical charm of a classic gnome house door. Beyond this pet door’s aesthetic appeal, it cleverly conceals your cat’s litter box, maintaining a fresh and odor-free home environment.
  • Cozy Cat Passage: Treat your furry friend to our large kitty door. Designed for cats up to 20 lbs, this cozy indoor cat door provides exclusive access to their favorite spots and a comfortable retreat.
  • Secure and Stylish: Bring the outdoors in with our charming pet door. Enjoy peace of mind with a lockable design that controls your cat's access while adding a touch of fanciful charm to your home's interior.
  • Durable Delight: Our gnome inspired cat door is built to last, even with the most playful pets. Crafted for durability, it brings a touch of garden magic to your home while ensuring your feline friend's safety and comfort.
  • Quick and Easy Install: This cat door is built to last and perfect for busy fur parents. Easily installed in any standard interior door (1.25 to 1.75 inches thick) – solid or hollow core – using the included screws and caps. Enjoy hassle-free installation and happy cats!
No. 5
Door Buddy Door Prop for Cats - Easiest Cat Door Latch Holder to Keep Interior Door Open for Pets - Dog Proof Cat Feeding Station & Litter Box - Strong & Portable Door Stopper & Pet Gate Alternative
  • Lets Cats In and Keeps Dogs Out - The Door Buddy Cat Door Prop is the easy, convenient, and secure way to keep door cracked open for cat to go in while also keeping it narrow enough to keep dog out of room (if slightly larger than cat).
  • Effortless to Use - Simply turn the knob or handle from either side to open the door and enter the room. It can't get any easier than that. Nothing to manually latch and unlatch every time you enter the room. Relatching in the propped position is even easier... just push or pull the door closed until the Door Buddy Door Latch Holder automatically latches onto the door plunger. That is it!
  • Simple Installation, Non-Permanent & Portable - Remove the existing strike plate from the door jam and replace it with the Door Buddy strike plate using existing screws. The Door Buddy Door Holder for Cats does not require any adhesives, cutting, or making new holes in your door, making it removable, reusable, and the perfect solution for renters and travelers alike. The result - a dog proof cat litter box in seconds.
  • Adjustable Width - Our patented strike plate and door latch holder allow you to adjust the width of the door opening to keep the door ajar between 3 - 5.5 inches so you can customize it to the exact sizes of your pets. Simply loosen the little screws, slide the two pieces to the desired width, and fully tighten the screws until it locks and no longer slides. T8 Torx tool is provided in the product package.
  • Strong, Durable & Pinch Free - Made from thick, high-quality materials making it strong and durable so it will stand up even to big and determined dogs. Finally, a pet, dog, cat door stopper where there is no "movement" when in the propped position which means no pinched fingers, tails, and no getting locked in or out of rooms.
No. 6
LIBBEPET Cat Door Interior Door, Push & Turn 4-Way Lock Indoor Cat Doors, Reinforced ABS Frame Pet Doors for Cats Up to 18 lbs, Easy DIY Installation for Interior and Exterior Doors, Lagre
  • Feline’s Gateway to Adventure: This cat door turns any indoor or outdoor door into a handy entry for your cat, letting cats freely roam their domain. It puts an end to the “meowing at closed doors” chaos. It’s a simple way to give your cat freedom, keeping both you and your cat happy.
  • Keep Control of Access: Our paw-proof 4-way lock lets you set the mode: in-only, out-only, wide open, or fully closed. No more surprise escapes, and it keeps unwanted critters (like strays or bugs) out. Best of all, managing your cat’s access is a total breeze.
  • Make a Nice Space: The cat door flap has 4-sided enclosing brush strips that create a tight seal. This flap design keeps pesky bugs away from your cat and locks litter box odors. It’s a total win-win, keeps your home fresh, your cat’s space private, and both of you happy.
  • Tough & Reliable ABS Build: We made this pet door with a reinforced ABS frame, because your cat deserves a door just as tough as their curiosity. The sturdy structure ensures secure, stable installation, withstands scratches, bumps, and frequent use. Unlike flimsy alternatives, it stays intact through all your pet’s chaos, built to last.
  • Perfect Size for Your Feline: Designed for your cat’s comfort, it has a roomy 7.2”W x 7.3”H flap opening—fits most cats up to 18 lbs. Precise sizing means easy, cramp-free passage—no squeezing needed! Just measure your cat’s width and height first, and they’ll explore stress-free. Your furry friend stays happy and comfy the whole time.
No. 7
IKUSO Cat Door for Interior Door,Hidden Pet Litter BoxPet Door for Cats up to 25 lbs Pet Box,Pass Through Opening 8.46x7.87 in(XL)
  • ღSAFE AND DURABLEღ: The indoor cat door is made of ABS material, which is wear-resistant and durable.The edges are smooth and burr-free to protect the cat from being scratched.Smooth line design, paintable materials, perfectly matching your door and decoration.
  • ღAPPLICABLE SCENEღ: The indoor cat door suitable for all hollow doors & solid doors & inner doors,Perfect for laundry rooms, bedrooms, basements, etc.she‘ll have its own activity space , and your home will smell fresh.
  • ღBARRIER-FREE DOOR DESIGNღ: There is no one in the house. Put the cat food in the house. With the cat door for interior door, there is no need to worry about the entry of the dog. The cat can freely go in and out to play, eat and drink!
  • ღNO FALLING OFFღ:The indoor cat door is installed with screws, avoid falling off and gaps caused by tape installation, no noise and no trouble caused by door locks and door damage
  • ღFRIENDLY AFTER-SALE SERVICEღ: Please feel free to contact us if you need any help from us or any inquiries about the cat door, we will give you a satisfactory solution within 24 hours.
No. 8
goTeamghjkl Cat Door Flap (Outer Size 7.5" x 7.8"), 4 Way Locking Medium Cat Door for Interior Exterior Doors, Weatherproof Pet Door for Cats Doggie Kitty and Kittens with Circumference < 15.75"
  • 4 Way Locking Mode --- The pet door could be adjusted by the Red and Green switches with tabs to 4 modes: out only, in only, both in and out, and fully locked, easy control of your pet's in and out.
  • Size & Application --- Outer size 7.5" x 7.8" x 2"(W x H X D), inner size:6.1" x 6.3"(W x H), cut-out size: 6.3" x 6.7" (W x H), suitable for installation on doors and thin walls, suitable for cat lighter than 16 lb and waist circumference shorter than 15.75" improved weather.
  • High Quality --- Made of ABS material, weather-resistant, the surface is smooth. It provides a fixed groove with snap tabs for weather-proof brush strip, firmly fix the brush strip. Even if the brush strip comes off, easy to put it back into the fixed groove. This greatly help the brush strip reduce noise, stop rain drop, wind or pest like mosquito to the most.
  • Easy to Install --- Step by step installation instruction in the instruction manual included in sales box and installation presentation video for you reference, take care of notice and prepare necessary tools, easy to install as your need. The tunnel depth could be cut down according to your installation need.
  • Applicable scene --- It fits to being installed to interior doors, exterior doors, walls, windows, cupboards, glass, etc.

The Ultimate Buying Guide: A Purrfect Choice for Your Home

Giving your cat freedom inside your home is wonderful. A cat door for an interior door makes this easy. This guide helps you choose the best one for your space and your furry friend. No more closed doors! Your cat can move between rooms whenever they want.

Key Features to Look For

When shopping, look closely at what the door offers. These features make a big difference in how well the door works for you.

Flap Design and Material

  • Easy Swing: The flap should open easily for your cat. Heavy flaps make your cat work too hard. Look for lightweight flaps.
  • Sealing: Does the flap close tightly? A good seal stops drafts between rooms. Some doors have magnetic closures to keep them shut.
  • Visibility: Clear flaps let you see if the door is open or if your cat is using it.

Size Matters

Measure your cat! The door must be big enough for your cat to pass through without crouching too much or getting stuck. Measure your cat’s width and height at their widest and tallest points. Then, add an inch or two for comfort.

Locking Mechanisms

Do you need to keep your cat in or out of a certain room sometimes? A locking feature is important. Simple slide locks are common. More advanced models might have four-way locks (In only, Out only, Open, Locked).

Important Materials and Durability

The material affects how long the door lasts and how it looks. Most interior cat doors are made of plastic or sometimes metal.

Plastic Doors

  • Pros: Plastic is light and usually cheaper. It is easy to clean.
  • Cons: Cheap plastic can crack over time, especially if stepped on.

Metal Components

Check for strong metal hinges or screws. Metal parts usually mean the door will stay sturdy longer. Screws should not rust easily.

Factors That Improve or Reduce Quality

Quality isn’t just about the price tag. Think about installation and sound.

Installation Ease

How hard is it to put the door into your hollow-core or solid interior door? Good quality doors come with clear templates and all the necessary hardware. If installation is too hard, you might damage your door.

Noise Level

A noisy door can annoy people and scare timid cats. Listen for loud clicking or rattling when the flap swings. Doors with smooth, quiet hinges are better quality.

Weather Sealing (Even Indoors)

While these are interior doors, good seals prevent unwanted airflow or smells from traveling between rooms. Better insulation means a higher quality product.

User Experience and Use Cases

Think about *why* you need this door. This helps you choose the right model.

Common Use Cases

  • Litter Box Access: Placing the door between the main living area and a laundry room where the litter box lives is very popular.
  • Pet Separation: If you have a dog who shouldn’t get into the cat’s food or sleeping area, an interior door allows the cat privacy.
  • Multi-Level Homes: Cats can easily move between the main floor and the basement or upstairs bedrooms.

Installation Location

Most people install these doors near the bottom of the door, about 2 to 4 inches from the floor. Measure your cat again at this height before you cut any holes!


10 Frequently Asked Questions (FAQ)

Q: Will this door damage my interior door?

A: If you follow the instructions, the door should only require cutting a hole. Use the provided template carefully. If you rent, check with your landlord first, as cutting a hole might not be allowed.

Q: Can I use an exterior cat door inside?

A: You can, but exterior doors are usually thicker and built to keep weather out. They might be too bulky or have complex locking features you do not need inside.

Q: How do I stop my dog from using the cat door?

A: You need a door with a good lock. Use a four-way locking system and keep it set to “Cat In/Out Only” when the dog is around. Some people also buy magnetic doors that only open for a collar tag.

Q: What is the hardest part of installing one?

A: The hardest part is cutting the hole accurately. Measure twice, cut once! Use a sharp saw designed for wood or composite material.

Q: Are these doors noisy when the cat uses them?

A: Cheaper plastic flaps often click loudly when they snap shut. Higher-quality doors use softer rubber or better hinges to reduce noise.

Q: How wide should the opening be?

A: The opening should be at least one inch wider than your cat’s widest point. This prevents fur from getting caught.

Q: Do I need a special tool to install it?

A: You usually need a drill for pilot holes and a jigsaw or rotary tool to cut the main opening. Screwdrivers are needed to attach the frame.

Q: What if my door is solid wood?

A: Solid wood doors are harder to cut than hollow-core doors. You will need stronger cutting tools and more patience.

Q: How do I clean the flap?

A: Most plastic flaps wipe clean easily with a damp cloth and mild soap. Check the manufacturer’s guide for specific cleaning instructions.

Q: Will this door fit standard door thicknesses?

A: Most interior cat doors are designed for standard door thicknesses (about 1 3/8 inches). If your door is very thin or very thick, check the product specifications carefully before buying.