10 Best Cat Glass Door of 2025

Tested and Reviewed: Top 10 Cat Glass Door deals with expert ratings from 8.1 to a perfect 10

July 2025 Edition

Editor's Choice

9.7

Lessmon

Cat Door for Windows, Pet Doors and Sliding Door, Safety Pet Door with 4 Way Lock, Weatherproof Cat Flap for Thin Door and Wall(Large, 9.8 * 9.3 * 0.78in)

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Editor's bottom line:

“This cat glass door is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Freedom & Convenience - Through the great cat door, your cats or small dogs can go in and out easily and quietly. They wont feel trapped and you no longer bother to open or close the door for them.
Safer with 4 Lock Modes - By slide the switches, you can adjust the access mode to Free In & Out, Fully Locked, Out Only, In Only, control your pets access and keep away stray animals.
No Tunnel Part, No Need to Cut - The panels are only 0.78in thick and tightly fitted, suitable for windows,wooden door and sliding glass door, etc. With 9.8 x 9.3in outer size, 8.3in x 7.7in flap,this cat door for window is for cats and small dogs with waist circumstance shorter than 24in.
Durable & Comfortable - Made of sturdy ABS plastic, the cat door interior door is ready to serve your pets for long time. With sealing well strip, magnet for aligning, it can keep away bugs and the smell of cat litter, reduce the loss of cold air in summer and the loss of heat in winter.
Simple Installation - Package includes detailed instructions(with templates on), 8 screws and their caps, double-sided tapes. You can cut the template off and install the cat door for sliding glass door easily.

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Picked by 255 people today

9.5

PROTECTO

PROTECTO 2 Pack Cat Dog Scratch Protector, 35.5x24, Indoors Outdoors, Easy Install on Wall, Glass Door

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Main Highlights

[Paw Proof Your Doors]: Ring, ringGot fur babies who love scratching every time the bell rings. Say goodbye to the headache with PROTECTO door protection from dog scratching- Train your pet to stop scratching naturally with the slick surface design, eliminating the sensation of claw sharpening and saving your doors for years to come.
[Vanish Scratches, Not Style]: Cats and dogs love to scratch, but that shouldn't ruin the doors in your home, Let your pets be pets with the Cat and dog door protector scratch guard. Attach to your door using the clear double sided adhesives included in the packet, and let this sheet resist the most aggressive scratches.
[5-Min Quick Fix]: Fed up looking for scratch guards that fully cover the door? The ultra-durable cat scratch door protector comes in tall 35.5x24" polycarbonate sheets for maximum coverage of your door and door frames. It fits any standard door exactly how you want it, saving your doors from embarrassing scratches from your furry baby.
[Brand New Doors Always]: No more hiding your pet's scratch art on your beautiful walls and doors. The 0.8mm anti-scratch door protector is transparent enough to show off your actual doors, so you'll never have to pull it down when unexpected guests stop by, and your pets won't even notice it's there - Bye Bye ugly cardboard.
[Flaunt That Doorway]: Whether it's your cat scratching the main door or your dog's paw prints on the sliding glass, the door dog scratch protector keeps your home's beauty safe from ugly double-sided tapes, nails, or pins by smoothly attaching onto any door surfaces, trim, and corners - Let's save you money on those frustrating repairs.

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9.5

Ideal Pet Products

Ideal Pet Products Aluminum Pet Patio Door, Adjustable Height 77-5/8" to 80-3/8", 5" x 7" Flap Size, White

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Main Highlights

Adjustable Height: 77-5/8" To 80-3/8" for ALUMINUM sliding patio doors only. To ensure ordering correct height, measure flush at top track to the inside bottom track of your ALUMINUM sliding patio door frame.
Includes a weather strip to perfectly seal with your slider, keeping the elements out and your home comfortable.
Easy to install and remove: Perfect for renters or anyone who prefers a less permanent solution.
Features a 5 x 7" flexible, transparent vinyl flap that makes it easy for your pet to come and go while providing a clear view.
Pet door rise is 2" (Pet door rise is the distance of the pet door from the floor) with a door width of 8.75. Suitable for pets up to 5 wide and weighing up to 12 pounds.

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Best Value

9.2

Save 50%

Lessmon

Cat Door, Safety Pet Door with 4 Way Lock, Weatherproof & Easy Installation Cat Flap Door for Interior Exterior Door, Window, Wall(X-Large, 7.87in x 8.66in Flap)

50% OffFree Shipping

Main Highlights

Freedom & Convenience - Through the great cat door, your cats or small dogs can go in and out easily and quietly. They wont feel trapped and you no longer bother to open or close the door for them.
Safer with 4 Lock Modes - By slide the switches, you can adjust the access mode to Free In & Out, Fully Locked, Out Only, In Only, control your pets access and keep away stray animals.
Durable & Comfortable - Made of sturdy ABS plastic, the cat door interior door is ready to serve your pets for long time. With sealing well strip, magnet for aligning, it can keep away bugs and the smell of cat litter, reduce the loss of cold air in summer and the loss of heat in winter.
X-Large Size & Versatile - With 9.84 x 10.90in outer size, 7.87in x 8.66in flap,this pet door is for cats and small dogs with waist circumstance shorter than 24.8in. Perfect for interior and exterior doors of wood, PVC, metal, paneled, glass etc. It also can be installed in windows, wall, cat litter box etc.
Easy to Install - The cat door for exterior door comes with detailed instructions, 8 screws and their caps, double-sided tapes. After the necessary tools are ready, you can DIY easily. In addition, the tunnel depth can be cut on demand.

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9.0

Save 18%

Hakuna Pets

Hakuna Pets Ultra Clear Pet, Cat and Dog Door with 4-Way Locks for Screens, Glass Doors and Windows up to 0.6" Thick, Small, Clear

18% OffFree Shipping

Main Highlights

Ideal for glass doors, windows and security screens up to 0.6 thick
11. 42" diameter frame, 7.48" x 7.48" door flap, for pets up to 20 lbs.
4-Way locking flap to control your pets access; in only | out only | open | locked
Draft and weather-proof fitted with a rubber seal to block drafts and strong magnets keep door flap centered after each use
For interior or exterior use durable polycarbonate frame and flap are UV resistant and virtually unbreakable

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8.8

CEESC

CEESC Large Cat Door (Outer Size 11" x 9.8"), 4 Way Locking Cat Door for Windows & Sliding Glass Door, Weatherproof Cat Flap Door for Cats & Doggie with Circumference < 24.8"

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Main Highlights

4 WAY SWITCH 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: 9.8" x 11" x 0.94"(W x H x D), Inner size: 7.9" x 8.7"(W x H), Cut-Out Size: 8.3" x 9.5" (W x H), suitable for mounting on glass door or windows, suitable for cat and doggie lighter than 27.54 lb and waist circumference shorter than 24.8"
SAFE & THOUGHTFUL --- The transparent flap let pet see through the door. Exterior rain seal is for waterproof. Brush strip eliminates noise from the door closing.
EASY TO INSTALL --- Complete instructions included, make you easily install in windows, glass ,metal door etc.
EXCELLENT QUALITY --- Made of ABS material, weather-resistant, the surface is smooth and durable.

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8.6

Tbest

Pet Door for Glass Window,Cat Flap Door, 4 Way Locking Cat Doors, Small Pet Door for Cats, Small Dogs, Puppy and

Main Highlights

Beautiful decoration for glass doors and : the small pet door is transparent, so after installation on transparent glass doors/, they will look like a whole body; Ideal for installation on glass and sliding glass doors
Ideal Cave Doors: and weatherproof. You can install it on doors or walls. Suitable for pets, cats, puppies and other small animals. The door frame dampens the noise. Although your pet comes in and out often, it does not make any annoying noise.
for gatera corriera suitable for gatera for glass
Give your dogs and cats the freedom to enter or exit without asking for your help to open the door: for potty breaks or playing.
Gorgeous decoration: after the transparent round cat door has been installed on transparent glass / doors, it can be used as a beautiful decoration; It is ideal for sliding glass doors

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8.3

fantrek

FANTREK Dog Door for Sliding Door - Opening Width: 8.66 in, Max Height: 84.25 in - Cat Dog Door for Sliding Glass Door - Patio Sliding Door Dog Door Insert, Mediun, White

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Main Highlights

DESIGNED FOR MEDIUM PETS: This patio dog door features a flap opening of 8.66" W x 12.2" H, perfect for cats or dogs up to 40 lbs.
ADJUSTABLE HEIGHT: The durable aluminum patio dog door insert is adjustable in height from 44" to 84.25", ensuring a perfect fit in your existing sliding door track.
EASY INSTALLATION: No cutting or complex tools required! This pet door is simple to install without the need for modifications to your sliding glass door.
CONTROLLED ACCESS: Manage your pet's access with the closing panel, allowing you to limit their entry when necessary.
ENERGY EFFICIENT & WEATHER-PROOF: The durable wire mesh keeps insects out while allowing for indoor air circulation. Clear panels can be added for protection against extreme weather conditions.

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8.1

fantrek

FANTREK Cat Door for Sliding Glass Door - Small Pet Door for Sliding Door Insert - 78-82 in Cat Door for Patio Slider

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Main Highlights

NOTE! ! !: Please measure your door frame height, track width, pet width, pet height before purchaing.
Designed for Small Pets: This patio cat door features a flap opening of 8.94" W x 12.24" H, perfect for small pets up to 40lbs.
7-Foot Adjustable Height: The durable aluminum patio dog door insert is adjustable in height from 78" to 82". The top spring of the dog door is designed to perfectly match the height of your door frame.
Durable Aluminum and Tempered Glass Construction: Made with high-quality aluminum and tempered glass, this dog door combines strength and safety, ensuring long-lasting performance and a secure environment for your pets.
Convenient Slide-In Panel: The slide-in panel allows you to control pet access effortlessly, and prevent wild animals from entering your home.

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8.1

PetSafe

PetSafe Doggy Door for Sliding Glass Doors, Adjustable Height 75 7/8" to 81", No-Cut DIY Install, Aluminum Panel, Ideal for Renters, for Cats and Small Dogs Up to 15 lb, (White, Small)

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Main Highlights

PERFECT FOR APARTMENTS AND RENTAL HOMES: Introducing a no-cut DIY installation pet door. This 1-Piece Sliding Glass Pet Door is a blessing for those who are not tool-savvy or simply lack the time for a complex setup. This sliding door dog door insert allows your furry friend the freedom they crave without the hassle of a traditional installation process.
ADJUSTABLE HEIGHT: Experience the versatility of this dog door, with an adjustable height ranging from 75 7/8" to 81". This feature ensures that the pet door can fit into a variety of sliding door tracks, making it a flexible choice for different homes. These pet doors can be tailored to meet your specific needs, offering a secure and comfortable passage for your pet, whether you live in a compact apartment or a spacious house.
SMALL: Designed with cats and small dogs in mind, this sliding glass dog door boasts a flap opening of 5 1/4" W x 8 3/8" H, accommodating pets up to 15 lb. This door size is essential for pet owners with cats and small dog breeds, ensuring their pets can comfortably and safely use the door without any risk of injury.
SECURITY LOCK: Preserve the security of your home with the included latch kit, which allows you to lock your sliding doors once the pet door is installed. This dog door offers peace of mind, helping assure that your home remains secure even with the pet door in place.
CONTROLLED ACCESS: Control your pet's access with the closing panel included with the pet door. This is particularly useful for times when you want to limit your pet's outdoor activities. The closing panel gives you the power to decide when your pet can go out, helping ensure their safety and well-being at all times.
U.S.-BASED CUSTOMER CARE: Our pet product experts are here to help you and your pet and are available by phone, email or chat if you have any questions
QUALITY PROMISE: Trust in the quality promise of PetSafe, a global leader in pet behavior, containment, and lifestyle innovations, offering an automatic dog door with collar sensor. Since 1998, PetSafe has been providing electric pet doors for dogs, designed with your pet's best interests at heart, keeping them healthy, safe, and happy.
Easily install a pet door in your existing sliding glass door- no cutting required
Great for apartments or condos- take the door with you when you move
Durable aluminum frame including weather stripping and slide-in closing panel for weather resistance
Three colors available to fit your décor White/Satin/Bronze
Four pet door sizes to fit a wide variety of pet heights and weights
Includes flexible, tinted flap with magnetic closure and latch kit for locking
Call, chat or email with our expert US-based customer care specialists six days a week; They are waiting to assist you and your pet with your product needs
PetSafe brand has been an industry leading US manufacturer of pet behavior, containment and lifestyle products since 1991, helping millions of people and pets each year

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Our Best Overall Choice

Best Choice

9.7

Lessmon

Cat Door for Windows, Pet Doors and Sliding Door, Safety Pet Door with 4 Way Lock, Weatherproof Cat Flap for Thin Door and Wall(Large, 9.8 * 9.3 * 0.78in)

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Freedom & Convenience - Through the great cat door, your cats or small dogs can go in and out easily and quietly. They wont feel trapped and you no longer bother to open or close the door for them.
Safer with 4 Lock Modes - By slide the switches, you can adjust the access mode to Free In & Out, Fully Locked, Out Only, In Only, control your pets access and keep away stray animals.
No Tunnel Part, No Need to Cut - The panels are only 0.78in thick and tightly fitted, suitable for windows,wooden door and sliding glass door, etc. With 9.8 x 9.3in outer size, 8.3in x 7.7in flap,this cat door for window is for cats and small dogs with waist circumstance shorter than 24in.
Durable & Comfortable - Made of sturdy ABS plastic, the cat door interior door is ready to serve your pets for long time. With sealing well strip, magnet for aligning, it can keep away bugs and the smell of cat litter, reduce the loss of cold air in summer and the loss of heat in winter.
Simple Installation - Package includes detailed instructions(with templates on), 8 screws and their caps, double-sided tapes. You can cut the template off and install the cat door for sliding glass door easily.

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