Top 5 Cat Door For Exterior Door: Expert Buying Guide

Peter Armani | 20-02-2026

Allowing your cat safe, independent access to the outdoors can make life easier for both you and your pet. Exterior cat doors come in a range of sizes and materials, with different locking and weatherproofing features to suit various home setups. Whether you’re looking for a simple solution or something more robust for frequent use, choosing the right cat door ensures comfort and security for your feline companion.

Editor's Choice
Depets Large 4-Way Locking Cat Flap
Depets Large 4-Way Locking Cat Flap
Premium Pick
Depets Medium Cat Flap Door, Magnetic Lock
Depets Medium Cat Flap Door, Magnetic Lock
Budget Pick
Pet Door for Wood, PVC, Metal or Paneled Doors
Pet Door for Wood, PVC, Metal or Paneled Doors

Top 5 Cat Door For Exterior Door

We researched and compared the top products in the Cat Door For Exterior Door category to provide you with these recommendations.

1. Depets Large 4-Way Locking Cat Flap

Spacious Four Way Access
Depets Large 4-Way Locking Cat Flap

This cat flap is made from sturdy ABS plastic with a smooth finish, designed for everyday use in homes with active pets. The large opening suits bigger cats or small dogs, and the transparent flap helps pets feel comfortable moving between spaces. Its four-way locking system lets you control your cat’s access with ease, making it practical for exterior doors.

What We Like:

  • Versatile four-way locking
  • Large opening for big cats
  • See-through flap for comfort
  • Weather-resistant build
  • Brush strip for quieter use

What Could Be Improved:

  • Installation requires careful measuring
  • Not ideal for very thick doors

2. Depets Medium Cat Flap Door, Magnetic Lock

Quiet Magnetic Closure
Depets Medium Cat Flap Door, Magnetic Lock

Built with a moderate-sized opening, this cat flap uses a magnetic closure to reduce noise and keep the flap securely shut. The transparent panel allows pets to see through, which can help with training and comfort. Its four-way locking system offers flexible control, and it’s generally easy to install on standard doors.

What We Like:

  • Magnetic closure for quiet use
  • Four-way locking system
  • Transparent flap for visibility
  • Fits medium-sized cats
  • Straightforward installation

What Could Be Improved:

  • Not suitable for very large cats
  • May require additional sealing for exterior use

3. CEESC Extra Large Cat Door, 4-Way Locking

Extra Large Pet Access
CEESC Extra Large Cat Door, 4-Way Locking

Constructed from weather-resistant ABS, this extra-large cat door feels robust and is suitable for bigger cats or even small dogs. The four-way locking mechanism gives you control over your pet’s comings and goings, while the transparent flap helps reduce anxiety. Features like a brush strip and rain seal make it more comfortable and quieter to use in exterior settings.

What We Like:

  • Extra-large opening for bigger pets
  • Four-way locking for flexibility
  • Weather-resistant construction
  • Brush strip reduces noise
  • Rain seal for outdoor use

What Could Be Improved:

  • May be too large for small cats
  • Requires careful measuring for installation

4. MAVRICFLEX All-Stainless Steel Cat Door with Double Soft Flaps

Durable Stainless Frame
MAVRICFLEX All-Stainless Steel Cat Door with Double Soft Flaps
8.9

Mavricflex

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Featuring a solid stainless steel frame, this cat door is designed for durability and long-term use in both indoor and outdoor environments. The double soft flaps are easy for pets to push through, and sliding panels help block out weather and drafts. It’s intended for installation on a variety of door types, offering a sturdy feel and weather protection.

What We Like:

  • Rust-resistant stainless steel frame
  • Double flap design for insulation
  • Fits multiple door types
  • Easy for pets to use
  • Weatherproof sliding panels

What Could Be Improved:

  • May require more effort to install
  • Bulkier than plastic models

5. Pet Door for Wood, PVC, Metal or Paneled Doors

Simple DIY Installation
Pet Door for Wood, PVC, Metal or Paneled Doors
8.9

Petsafe

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This pet door features a lightweight plastic frame that feels smooth and is easy to install in a range of door materials, including wood, PVC, and metal. The swinging flap moves easily for pets, and the frame can be painted to match your door. A lockable slide panel provides basic access control, making it a practical choice for many households.

What We Like:

  • Works with multiple door types
  • Paintable frame for customization
  • Lockable slide panel for control
  • Smooth swinging flap
  • Straightforward installation

What Could Be Improved:

  • Flap size may not suit larger cats
  • Not designed for thick or insulated doors

How to Choose a Cat Door for Exterior Doors

Sizing and Pet Compatibility

Getting the right size ensures your cat is comfortable using the door and prevents drafts or security issues.

Locking Mechanisms and Security

Locking options help manage your pet’s access and can deter unwanted animals from entering.

Weather Resistance and Insulation

Weather-resistant features keep your home comfortable and reduce energy loss, especially in colder regions.

Installation and Door Compatibility

Proper installation is key for security and weather protection. Make sure your chosen cat door fits your door’s material and thickness.

Noise and Ease of Use

Quiet, easy-to-use doors are less stressful for both pets and owners, especially in busy households.

FAQ For Cat Door For Exterior Door

1. What size cat door should I get for my exterior door?

Measure your cat’s height and width, then choose a door with an opening slightly larger than your pet to ensure easy and comfortable passage.

2. How do I weatherproof a cat door for an exterior door?

Look for models with weather seals, brush strips, or double flaps, and ensure the frame fits tightly to prevent drafts and moisture from entering.

3. Can I install a cat door in a metal or PVC exterior door?

Many cat doors are designed for use in wood, metal, or PVC doors, but always check the manufacturer’s compatibility guidelines before installation.

4. Are locking mechanisms necessary for exterior cat doors?

Locking mechanisms provide control over your cat’s access and can help prevent stray animals from entering, making them useful for exterior doors.

5. How difficult is it to install a cat door in an exterior door?

Installation difficulty varies; some models are DIY-friendly, while others may require careful measuring and cutting. Always follow the included instructions for best results.
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Peter Armani

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