Add the ability to install your PetSafe Large SmartDoor Extension Tunnel in a wall more than 7 in. thick with this additional tunnel extension. This tunnel must be used with the Wall Conversion Kit (not included). Not compatible with the Small Electronic SmartDoor.
- 2-3/4 in. W
- 1 year limited warranty
Note: This product may require up to 2 additional days for order processing prior to shipping