This pet door tunnel extension allows the SmartDoor™ Connected Pet 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

• Adds depth for doors and walls that are thicker than standard
• Secures in place with glue or tape for a stable, flush installation
• Each extension increases tunnel length by 2 inches
• Requires no tools for setup, making installation simple
• Designed to work seamlessly with the SmartDoor™ Connected Pet Door

Better doorway space

The SmartDoor™ Connected Pet Door tunnel extension gives your pet 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 pet’s indoor-outdoor freedom with the SmartDoor™ Connected Pet Door Tunnel Extension — a practical solution for thicker walls and doors while keeping your smart entry system intact.