SureFlap Tunnel Extender for Cat Flap Pack of 3

Need extra tunnel length for a wall-mounted cat flap? This pack of three cat flap tunnel extenders is a practical cat flap accessory that works with SureFlap Microchip Cat Flap, SureFlap DualScan Microchip Cat Flap and SureFlap Microchip Cat Flap Connect. It is designed to lengthen the tunnel where a standard installation feels too short or the wall is thicker than expected.

Each extender adds an extra 50 mm to the existing tunnel, and they fit snugly onto the original tunnel for a stable, draught-reducing passage. Made of plastic and requiring no additional tools, the pieces are lightweight and quick to install. The stackable design lets you create the exact tunnel length you need without cutting or permanent modification.

This accessory is especially useful when fitting a cat flap through thick walls or when a cat seems hesitant passing through a short tunnel. Adding length gives more enclosed space during transit, which can help timid cats feel less exposed. Keep multiple extenders on hand to tweak length as your installation or your cat’s comfort needs change.

Key Features

• Adds 50 mm per extender – increases tunnel length so you can match thicker walls or give cats a more covered passage.
• Compatible with SureFlap microchip cat flaps – ensures a proper fit with the listed models for wall installations.
• Tool-free plastic design – quick to fit and lightweight, with a snug attachment that helps reduce drafts and wobble.
• Stackable pieces in a pack of three – combine extenders to reach the required tunnel length without permanent changes.