The microchip cat door tunnel extension allows the Microchip Cat Door to be installed in thicker doors or walls, adding 2 inches of depth per tunnel. This accessory can be stacked as needed for custom thickness, creating a flush, precise fit for your pet’s passage. 

Features 

Better doorway space 

The microchip door tunnel extension gives your cat extra room to move comfortably through thicker walls or doors, keeping the passage smooth and unobstructed. 

Customizable fit 

Multiple extensions can be combined to match your door or wall thickness, creating a precise, flush connection with your existing microchip cat door. 

Durable and reliable 

Made from sturdy, weather-resistant materials, each extension is built to last and maintain proper alignment with the cat door over time. 

Tool-free setup 

Simply glue or tape the tunnel in place, no specialized tools are needed—so you can extend your pet’s access quickly and efficiently. 

Enhance your cat’s indoor-outdoor freedom with the Microchip Cat Door Tunnel Extension — a practical solution for thicker walls and doors.