Why it matters
The extender adds 2 in to the SureFlap Microchip Pet Door's 2 3/4 in tunnel, so it can go through walls. Several can be stacked for thicker walls.
It fits the Pet Door size only, not the smaller cat flap.
Who it's for, and who should skip it
Good fit if
- SureFlap Pet Door owners
- Wall installs
- Thick walls
Look elsewhere if
- SureFlap cat flap owners
- Door installs
- Other brands
Pros and cons
Pros
- Official fit
- Stackable
- Wall-ready
Cons
- Pet Door only
- Extra cost
- Wall cutting
Limitations to weigh
- Check for wiring, pipes and studs before cutting a wall.
- Measure your cat's widest point and the door or wall thickness before cutting; check the cut-out size on the maker's template.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Material | Plastic | Retailer |
|---|---|---|
| Frame material | Plastic | Retailer |
| Breed size | Small | Retailer |
| Closure | Flap | Retailer |
| In the pack | 1 Count | Retailer |
| Pieces | 1 | Retailer |
| Product weight | 1 kg | Retailer |
| Model number | TUN101 | Retailer |
| Dimensions (seller) | 2.56 x 8.15 x 9.25 inches; 2.2 pounds | Retailer |
Alternatives worth comparing
More cat flaps & doors we cover
- ikuso Interior Cat Door
- Wordcam X-Large Interior Cat Door
- The Kitty Pass Interior Cat Door
- Purrfect Portal Meow Manor Interior Cat Door
All cat flaps & doors, compared in one table · Every SureFlap product we cover
Final verdict
Essential for fitting a SureFlap Pet Door through a wall.
Where to buy
Our links open this exact model's product page. Prices and stock change; check what's included before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure


