Cat Mate 221W Large Cat Flap – White 4-Way Locking Cat Door

The Cat Mate 221W Large Cat Flap is a stylish, high-quality pet door designed for large cats and many small dog breeds. Finished in classic white with a clear weatherproof flap, it offers a practical solution for giving your pet independent access while allowing you to control entry and exit using the built-in 4-way locking system.

Ideal for timber, uPVC and many panel doors, the Cat Mate 221W combines excellent weather protection, smooth operation and a clean modern appearance that complements both traditional and contemporary homes.

Designed for Large Cats and Small Dogs

The generous flap opening provides comfortable access for larger cat breeds as well as many popular small dogs with a shoulder height of up to approximately 360mm (14").

Suitable for pets including:

• Maine Coon
• Ragdoll
• British Shorthair
• Norwegian Forest Cat
• Bengal
• Yorkshire Terrier
• Dachshund
• Pekinese
• Miniature Poodle
• Cavalier King Charles Spaniel

We recommend measuring your pet before ordering to ensure the flap provides comfortable access.

Complete Control with the 4-Way Lock

The Cat Mate 221W features Cat Mate's reliable four-way locking system, allowing you to decide exactly when your pet can come and go.

• Unlocked – Free entry and exit.
• In Only – Allows your pet to enter but prevents them leaving.
• Out Only – Allows your pet to leave but prevents re-entry.
• Fully Locked – Securely locks the flap in both directions.

This makes it easy to keep your pet indoors overnight, during bad weather or whenever required.

Weatherproof and Quiet Operation

The transparent flap is fitted with a magnetic closure and effective brush seals to help reduce draughts while preventing the flap from slamming in windy conditions. The result is quieter operation and improved comfort for both pets and homeowners.

Easy Installation

The self-lining frame fits doors and panels up to 50mm (2") thick without requiring additional tunnel sections. The Cat Mate 221W is suitable for installation into:

• Wooden doors
• uPVC panel doors
• Metal doors
• Garage and utility room doors
• Garden buildings

For wall installations, the optional Cat Mate CP400 Wall Liner is available separately.

Key Features

• Genuine Cat Mate 221W Large Cat Flap
• Classic white finish
• Suitable for large cats and many small dogs
• Secure 4-way locking system
• Clear weatherproof flap
• Brush seal and magnetic closure
• Quiet opening and closing action
• Self-lining to 50mm thick
• Suitable for timber, uPVC and panel doors
• 3-Year Manufacturer's Guarantee

Product Dimensions

Overall Size
235mm × 252mm

Cut-Out Size
210mm × 227mm

Flap Opening
180mm × 180mm

Door Thickness
Self-lining up to 50mm (2")

What's Included?

• Cat Mate 221W Large White Cat Flap
• Transparent weatherproof flap
• 4-way locking mechanism
• Fixing screws
• Installation instructions

Frequently Asked Questions

Is the Cat Mate 221W suitable for large cats?

Yes. It has been designed for larger cat breeds such as Maine Coons, Ragdolls and British Shorthairs.

Can small dogs use this flap?

Yes. Many small dog breeds with a shoulder height up to approximately 360mm (14") can comfortably use the Cat Mate 221W.

What does the 4-way locking system do?

You can select fully open, fully locked, in only or out only, giving complete control over your pet's access.

Can it be fitted into a wall?

Yes. A wall installation is possible when used with the optional Cat Mate CP400 wall liner.

Is the flap weatherproof?

Yes. The magnetic closure and brush seals help reduce draughts while improving weather resistance.

Is this a genuine Cat Mate product?

Yes. We only supply genuine Cat Mate products complete with manufacturer packaging and installation instructions.

Download the Product Manual

Download the Cat Mate 221W Installation Manual (PDF)

Why Choose the Cat Mate 221W?

The Cat Mate 221W combines a modern white finish, generous flap opening, excellent weather sealing and a dependable four-way locking system, making it one of the UK's most popular cat flaps for larger cats and small dogs.