---
product_id: 287450080
title: "SureFlap Sure Petcare Microchip Cat Flap Tunnel Extender, Compatible with SureFlap Cat Flap, DualScan Microchip Cat Flap & Cat Flap Connect, White"
brand: "sureflap"
price: "$2"
currency: NZD
in_stock: false
reviews_count: 5
url: https://www.desertcart.nz/products/287450080-sureflap-sure-petcare-microchip-cat-flap-tunnel-extender-compatible-sureflap
store_origin: NZ
region: New Zealand
---

# Adds 50mm tunnel extension Tool-free easy installation Stackable for custom length SureFlap Sure Petcare Microchip Cat Flap Tunnel Extender, Compatible with SureFlap Cat Flap, DualScan Microchip Cat Flap & Cat Flap Connect, White

**Brand:** sureflap
**Price:** $2
**Availability:** ❌ Out of Stock

## Summary

> 🚪 Unlock your cat’s world with seamless tunnel extension!

## Quick Answers

- **What is this?** SureFlap Sure Petcare Microchip Cat Flap Tunnel Extender, Compatible with SureFlap Cat Flap, DualScan Microchip Cat Flap & Cat Flap Connect, White by sureflap
- **How much does it cost?** $2 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/287450080-sureflap-sure-petcare-microchip-cat-flap-tunnel-extender-compatible-sureflap)

## Best For

- sureflap enthusiasts

## Why This Product

- Trusted sureflap brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** Snap-on design means no tools, no hassle—get it installed in seconds.
- • **Seamless Compatibility:** Works flawlessly with SureFlap Microchip Cat Flaps for ultimate pet access control.
- • **Sleek & Durable Design:** Crafted from sturdy plastic in a clean white finish that blends with any décor.
- • **Tailor-Made Tunnel Length:** Stack multiple extenders to customize the perfect tunnel length for your home.
- • **Extend Your Pet’s Freedom:** Adds an extra 50mm to the existing 70mm tunnel, perfect for thicker doors or walls.

## Overview

The SureFlap Microchip Cat Flap Tunnel Extender is a versatile, easy-to-install plastic accessory that extends the tunnel length by 50mm, compatible with all SureFlap Microchip Cat Flap models. Its stackable design allows custom tunnel lengths without tools, ensuring a perfect fit for thicker doors or walls while maintaining a sleek white finish.

## Description

Product Description               The SureFlap Cat Flap Tunnel Extender can be used to install the SureFlap Microchip Cat Flap, the SureFlap DualScan Microchip Cat Flap and the SureFlap Microchip Cat Flap Connect in a wall. The tunnel of the cat flap is 70mm in length and each tunnel extender adds 50mm to the overall length of the tunnel. Multiple tunnel extenders can be stacked together to create a tunnel of any length.                  Set Contains:               SureFlap Cat Flap Tunnel Extender

## Features

- COMPATIBILITY: Works with SureFlap Microchip Cat Flap, SureFlap DualScan Microchip Cat Flap and SureFlap Microchip Cat Flap Connect.
- EXTRA EXTENSION: Adds and extra 50mm to the 70mm tunnel of the cat flap.
- EASY TO USE: Fits snugly onto the cat flap tunnel.
- EASY TO INSTALL: Made of plastic and doesn't require any additional tools to install.
- CUSTOMISATION: Simply stack multiple extenders together to create the required tunnel length.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Minimum compatible thickness | 0.5 Feet |
| Frame material | Plastic |
| Pet Type | Cat |
| UPC | 812472020048 |
| Global Trade Identification Number | 05060180390174 |
| Pet Type | Cats |
| Product Dimensions | 16.51 x 7.62 x 16.51 cm; 68.04 g |
| Item model number | Tunnel Extender - White |
| Closure | Magnetic |
| Color | White |
| Number of Items | 1 |
| Quantity | 1 |
| batteries required | No |
| Batteries Included | No |
| Item Weight | 68 g |

## Product Details

- **Size:** 50mm
- **Brand:** SureFlap
- **Colour:** White
- **Material:** Plastic
- **Mattress thickness:** 0.5 Feet

## Images

![SureFlap Sure Petcare Microchip Cat Flap Tunnel Extender, Compatible with SureFlap Cat Flap, DualScan Microchip Cat Flap & Cat Flap Connect, White - Image 1](https://m.media-amazon.com/images/I/61DBdrtDX8L.jpg)
![SureFlap Sure Petcare Microchip Cat Flap Tunnel Extender, Compatible with SureFlap Cat Flap, DualScan Microchip Cat Flap & Cat Flap Connect, White - Image 2](https://m.media-amazon.com/images/I/61y8hx5wxZL.jpg)

## Customer Reviews

### ⭐ 







  
  
    You'll need many of these
  

*by M***0 on Reviewed in the United Kingdom 🇬🇧 on 5 October 2019*

There is no situation where you will need just one of these. We needed FIVE. We don't have thick walls. Our home is standard brick two-leaf construction, as with nearly all UK houses. If you have something like an old stone cottage when you could be hitting the double digits. Wowzers!Additionally, there's no way of securing these together, or even to the catflap itself. They just losely clip onto each other, and can be pulled apart trivially. Sureflap's official YouTube video tells you to use gaffer tape to secure them! Over years the stickiness of the tape will break down so you'll need to periodically remove the entire thing, and re-gaffer-tape it.It's all a bit of a mess. Sureflap needs to do better here.

### ⭐⭐ 







  
  
    Flimsy, expensive, you will need lots
  

*by F***N on Reviewed in the United Kingdom 🇬🇧 on 29 June 2021*

If you thought an extender would be as thick as the door mount (~4mm thickness) you'd be dead wrong: this is 1mm thin plastic that will break the moment you try to mount it. You can clearly see the thickness difference when you mount it - I guess plastic is expensive these days right?As others have said, the mounting is flimsy also - best glue it - yes I am not joking - and then use strong tape on the outside. Otherwise it will break in time.You will need lots, for a normal wall at least 4 if not 5-6 making the tunnel the cost of the original flap! The usual nickel and dime for accessories. Thankfully Amazon charges just a fiver, others charge 2x or more!To be honest it make be cheaper, sturdier to get a plastic merchant build you tunnel from 4-5mm perspex/HDPE or (bend it round to make the tunnel - yes they can do this). I am getting quotes and will send all 4 of them back to AZ if it works out.

### ⭐⭐⭐⭐ 







  
  
    Good purchase
  

*by T***D on Reviewed in the United Kingdom 🇬🇧 on 19 June 2021*

Bought this product to go through 11" cavity wall. Works very well at reading my cats chip. Took a while for him to get used to using it and it's quite a long tunnel. A hint when assembling the tunnel to prevent it coming apart all the time is the use of a little solvent cement ( plumbing waste pipe glue) made the whole job of installation so much easier.

## Frequently Bought Together

- SureFlap Cat Flap/Door Tunnel Extender - for CAT Door NOT PET Door
- SureFlap DualScan Microchip Cat Door - Door Opening is 4 3/4" H x 5 5/8" W

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.nz/products/287450080-sureflap-sure-petcare-microchip-cat-flap-tunnel-extender-compatible-sureflap](https://www.desertcart.nz/products/287450080-sureflap-sure-petcare-microchip-cat-flap-tunnel-extender-compatible-sureflap)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-01*