PetSafe Electronic SmartDoor Large Wall Extension Tunnel

Install your Electronic SmartDoor in thicker walls with a Wall Extension Tunnel. The tunnel must be used with a Wall Conversion Kit (available separately). Each extension adds 2 3/4 inches to your tunnel. PetSafe brand is here to help you and your pet live happy together.

• Extension tunnel used in conjunction with the PetSafe SmartDoor Wall Entry Kit for walls thicker than 7 1/4 in.
• Extends an additional 2 3/4 in.
• Tunnel extension can be trimmed for extension less than 2 3/4 in.
• 1 tunnel included – no hardware