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Details updated 7 Nov 2026
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Description: The PetSafe Microchip Cat Door Tunnel Extension allows the PetSafe Microchip Cat Door to be installed into thicker doors or walls, adding 5cm to the overall depth with each tunnel. Adding the tunnel is simple, with no tools required, and each extension can be secured in to place with glue for a flush, precise fit. Multiple tunnels can be used in order to fit the needed door or wall thickness.
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