Cat & Dog Flaps for Internal Doors

Installing a cat or dog flap in an internal door is a simple way to give your pets the freedom to move around your home while keeping certain rooms separate when needed. The best option depends on your home's layout, insulation and how you want to manage your pet's access.

Choosing the Right Internal Pet Door

In modern, well-insulated homes, internal doors are often left open, making a simple pet opening or open pet corridor a practical solution. This allows cats and dogs to move freely between rooms while maintaining good airflow throughout the house.

If your home is older or prone to draughts, an internal pet flap with a closing door can help reduce heat loss between rooms. Many models also feature a locking panel or manual lock, allowing you to restrict access whenever required.

Before You Buy

Internal doors are generally easier to cut than external doors, but they vary considerably in thickness. Some lightweight panel doors are only a few millimetres thick, while solid timber doors can be 50–60mm thick.

Before choosing your pet flap, check:

• The thickness of your internal door.

• Whether you need a locking flap or an open pet opening.

• The size of your cat or dog.

• Whether you want permanent or controlled access.

Our range of internal door cat flaps and dog flaps is designed to provide easy installation, reliable performance and convenient access for pets throughout your home.