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300 Series Tunnel Extension White

If you are putting a pet door into a thicker door or wall, it usually requires a tunnel extension.

Price: $6.04

Item Number: 310US

Manufacturer: PetSafe

Quantity:

This tunnel extension is designed for the Staywell 300, 400 and 500 series cat flaps. It adds an extra 1-7/8" of depth, and you can combine more than one for even thicker walls and doors.