What accessories do I require for installation?
You likely don't require any mounting accessories:
- If you don't currently have a cat flap; or, if you're upgrading from another device with cutouts less than 200 mm width and 200 mm height;
- and your door is less than 55 mm thick (typically the case in the UK and most of Europe).
Exception: In the rare case that your door has a metal lining (<1% of installations), this may attenuate the microchip read range (Note: this is the case with any microchip cat flap). In such situations, expanding the hole may improve the microchip read range - which may then in turn require a Standard Round Mounting Adaptor to cover the enlarged hole.
If your door is more than 55 mm thick (more prevalent in Scandinavia), you may require:
- A tunnel extender;
- If your door is between than 60 and 90mm thick you may require 100 mm screws.
If your cutout is slightly larger than 205 mm width or 205 mm height (or 205 to 270 mm diameter hole), you may require the following to cover the slight gap:
If your cutout is quite large (i.e. not covered by a 280mm outer diameter Standard Round Mounting Adaptor), you may require a:
- Large Mounting Adaptor. These are available in three variants depending on available space and geometry of your existing cutout (Large Round, Large Square, Large Squircle).
For installations in glass (212 - 270 mm diameter) you will likely need:
If the diameter of the hole exceeds 270mm; you will likely need to use
If you already have a SureFlap Cat Flap, you may be able to re-use your existing adaptors. *Note: The SureFlap Pet Door is a larger variant than the SureFlap Cat Flap and therefore the Pet Door adaptors are not compatible.
For wall installations you will likely require:
- A Compact Mounting Adaptor;
- Tunnel Extenders to suit the wall thickness.
If you have any questions, feel free to drop us a message (ideally with some photos) and we'll do our best to guide you.
Updated on: 18/09/2025
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