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The SureFlap Microchip Pet Door Tunnel Extender adds length for installing a compatible SureFlap microchip pet door in a wall, with each extender adding 2 in (50 mm) to the tunnel.
When a microchip pet door is being installed in a wall, its tunnel may need additional length for the installation. This extender is made to add that length to a compatible SureFlap pet door. It is a tunnel accessory for the Pet Door size, so choosing it depends on both the pet door model and whether the Cat Door/Flap size is involved.
The extender lengthens the tunnel of a compatible SureFlap Microchip Pet Door for a wall installation. Each piece adds a set increment, allowing the tunnel to be extended in stages rather than relying on a single fixed-length extension. Multiple extenders can be stacked together to create a tunnel of any length.
It is designed for the SureFlap Microchip Pet Door and the SureFlap Microchip Pet Door Connect. The size distinction matters: this extender is for the Pet Door size, not the Cat Door/Flap. Confirm the name and size of your SureFlap door before selecting this accessory.
The set contains one SureFlap Pet Door Tunnel Extender. The tunnel on the SureFlap Microchip Pet Door is 2¾ in (70 mm) long, and this accessory adds to that tunnel. The extender is brown, matching the product’s stated color.
This accessory suits pet owners planning a wall installation with either compatible SureFlap microchip pet door and who need to extend its tunnel. Its stackable format allows the tunnel length to be built with additional extenders, while its Pet Door sizing helps distinguish it from the Cat Door/Flap version.
Q: Which pet doors fit the SureFlap Microchip Pet Door Tunnel Extender?
A: The SureFlap Microchip Pet Door Tunnel Extender fits the SureFlap Microchip Pet Door and Microchip Pet Door Connect. It is for the Pet Door size, not the Cat Door/Flap.
Q: How much length does the SureFlap Microchip Pet Door Tunnel Extender add?
A: Each SureFlap Microchip Pet Door Tunnel Extender adds 2 in (50 mm) to the tunnel. Multiple extenders can be stacked together.
Read our guide: Dog kit by life stage: puppy, adult and older dog
Free UK delivery on every order, with no minimum spend. We prepare orders in 1–3 working days, and most UK addresses receive them 3–7 working days after dispatch. A tracking link arrives by email once your parcel is on its way. Full details are on our delivery and returns page.
Free returns within 30 days. Changed your mind? You have 30 days from delivery to send an item back, and we never ask why. We email a prepaid label, and your refund reaches your original payment method within 10 working days of the item arriving with us. See the returns policy.
Arrived damaged or not what you ordered? Email a photo to support@ardentpets.co.uk and we will put it right.
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