Cat Mate 4 / Compatible Cat Flap Tunnel Extensions

Each tunnel extension module increases the depth of your cat flap installation and securely clicks onto both the flap housing and other tunnel sections.

Available extension depths: 2 cm, 2.5 cm, 3 cm, 3.5 cm, 4 cm, 4.5 cm, and 5 cm.
You can also combine multiple sections to reach your required wall or door thickness.

🧩 Important:
The cat flap frame and tunnel sections overlap by ~7 mm.
When measuring, determine the missing depth for your installation and subtract 7 mm from the total to get the net extension length you need.