Combi-Bolt CB2000-BLK 4-Dial Combination Sliding Bolt Lock With Black Finish

The SureFlap pet door tunnel extender fits snugly onto the tunnel of the SureFlap Microchip Pet Door and multiple extenders can be stacked together to form a tunnel of any length. The tunnel of the SureFlap Microchip Pet Door is 2Â¾" long and each pet door tunnel extender adds 2" to the length of the pet door's tunnel.

Extends the tunnel of the SureFlap Microchip PET DOOR for wall installations
Adds 2" in length to the 2¾" length of the tunnel on the SureFlap Microchip Pet Door
Multiple tunnel extenders can be stacked together to create a tunnel of any length
Used for the PET DOOR size NOT the Cat Door/Flap
Extends the tunnel of the SureFlap Microchip PET DOOR for wall installations
Adds 2" in length to the 2¾" length of the tunnel on the SureFlap Microchip Pet Door
Multiple tunnel extenders can be stacked together to create a tunnel of any length
Used for the PET DOOR size NOT the Cat Door/Flap

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SureFlap Microchip Pet Door Tunnel Extender (White);