--- product_id: 18074363 title: "Microchip Pet Door Tunnel Extender (White)" brand: "sureflap" price: "S/.229" currency: PEN in_stock: true reviews_count: 8 category: "Sure Flap" url: https://www.desertcart.pe/products/18074363-microchip-pet-door-tunnel-extender-white store_origin: PE region: Peru --- # Adds 2" tunnel length Stackable for custom length Wall installation ready Microchip Pet Door Tunnel Extender (White) **Brand:** sureflap **Price:** S/.229 **Availability:** ✅ In Stock ## Summary > 🚪 Unlock the perfect passage—extend your pet’s world with style and security! ## Quick Answers - **What is this?** Microchip Pet Door Tunnel Extender (White) by sureflap - **How much does it cost?** S/.229 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/18074363-microchip-pet-door-tunnel-extender-white) ## 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 - • **Microchip Compatible:** Works exclusively with SureFlap Microchip Pet Doors for smart pet access control. - • **Effortless Installation:** Designed for easy wall mounting with optional sleeve for a clean, professional finish. - • **Secure & Durable Design:** Robust plastic build ensures long-lasting performance and protection. - • **Custom Length, No Limits:** Stack multiple extenders to create the perfect tunnel length for your home. - • **Extend Your Pet’s Freedom:** Adds 2 inches to the existing tunnel for seamless wall installations. ## Overview The SureFlap Microchip Pet Door Tunnel Extender (White) is a durable plastic accessory that adds 2 inches to the 2¾" tunnel length of SureFlap Microchip Pet Doors, enabling wall installations. Multiple extenders can be stacked to customize tunnel length, providing flexible, secure pet access solutions compatible only with the SureFlap Microchip Pet Door (not the Cat Door/Flap). ## Description Product Description The SureFlap Pet Door Tunnel Extender can be used to install the SureFlap Microchip Pet Door and the SureFlap Microchip Pet Door Connect in a wall. The tunnel of the pet door 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: 1 x SureFlap Pet Door Tunnel Extender Review: Great Product, solved my cat issues - This had a warning that they are often returned so I was worried. Mine is installed in an outside wall, my cat loves it and uses it all day. It reads her chip, unlocks the door and after the click from unlocking she pushes through it. I’ve had a raccoon try to come in, pushed very hard but it held. I give my cat access out all the time but at night restrict her access in because she likes to bring in her friends. I have been using the door over a month; Ihighly recommend this. Also their customer support is excellent; I used it to get help programming for my cats chip. Review: Perfect for wall mounting unit. - Unfortunately it wasn't what I wanted in the end. Easy installation in wall with sleeve (sold separately). It responded to my dog's microchip so no collar or key was needed (2 keys are supplied). Great styling & performance. It has 4 functions: a two-way in & out so door opens freely both ways (no programming needed); There is In Open; There is Out Open; There is two-way Fully Locked. The problem is: once the programmed pet goes out, its locked out. Once the pet comes in, its locked in. The two-way open feature allows all kritters in & out. The programmed pet will have to be manually let in or out by the owner depending on the setting. That kind of defeated the purpose of having a pet-operated security door. ## Features - 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 ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | SureFlap | | Color | White | | Customer Reviews | 4.1 out of 5 stars 828 Reviews | | Material | Plastic | | Mattress Thickness | 50 Millimeters | | Minimum compatible thickness | 2 Inches | | Size | 1 Count (Pack of 1) | ## Product Details - **Size:** 1 Count (Pack of 1) - **Brand:** SureFlap - **Color:** White - **Material:** Plastic - **Mattress Thickness:** 50 Millimeters ## Images ![Microchip Pet Door Tunnel Extender (White) - Image 1](https://m.media-amazon.com/images/I/51vbeAuqFxL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Product, solved my cat issues *by W***K on August 3, 2025* This had a warning that they are often returned so I was worried. Mine is installed in an outside wall, my cat loves it and uses it all day. It reads her chip, unlocks the door and after the click from unlocking she pushes through it. I’ve had a raccoon try to come in, pushed very hard but it held. I give my cat access out all the time but at night restrict her access in because she likes to bring in her friends. I have been using the door over a month; Ihighly recommend this. Also their customer support is excellent; I used it to get help programming for my cats chip. ### ⭐⭐⭐⭐⭐ Perfect for wall mounting unit. *by A***S on September 5, 2024* Unfortunately it wasn't what I wanted in the end. Easy installation in wall with sleeve (sold separately). It responded to my dog's microchip so no collar or key was needed (2 keys are supplied). Great styling & performance. It has 4 functions: a two-way in & out so door opens freely both ways (no programming needed); There is In Open; There is Out Open; There is two-way Fully Locked. The problem is: once the programmed pet goes out, its locked out. Once the pet comes in, its locked in. The two-way open feature allows all kritters in & out. The programmed pet will have to be manually let in or out by the owner depending on the setting. That kind of defeated the purpose of having a pet-operated security door. ### ⭐⭐⭐⭐⭐ Received wrong extender *by L***R on March 9, 2024* This tunnel extender description page clearly states it is the PET DOOR tunnel extender, not the cat door tunnel extender. But when I received the two of them I ordered, they were the CAT door tunnel extender, not the pet door extender. I paid for the more expensive pet door extender. The item number on the page is for the correct item, so my deduction is that Amazon warehouse has this item in the wrong bin. My husband worked for Amazon and says it's about impossible to pick out the wrong item because each item is scanned as you take it out, and the bins are all bar coded. So I don't think a robot or person reached into the wrong bin, because when the items were scanned they would be flagged as the wrong items. Since they were shipped with no problem, the bins must be stocked incorrectly. The customer service rep told me to reorder the same items and he didn't think the same mistake would occur again, but I'm not risking it. I got a refund from Amazon. BUT, the SureFlap pet door ROCKS. Love it, love it, love it. I have a cat, but I bought the larger pet door, because I thought she might be too skittish to go through the smaller door. Glad I did. I saw a video of a cat unlocking the CAT flap, because there's only one lock button on the cat door, so the cat could push the button with one paw and pull the flap open with the other paw. The pet door has two lock buttons, so an animal would have to press down both buttons and pull the flap at the same time. Unless you have two cats who can reason and coordinate, your cat won't get out when this door is locked. The extenders are necessary for most walls. If you put this flap in a door, you likely won't need the extenders. Best thing ever. Only drawback is we have occasionally had birds or mice in the house when the kitty brings us her treats before they are dead. You could solve this by putting the door into an enclosed porch and not the main house. But, I just live with it. A cat is worth chasing a few critters. :-) ## Frequently Bought Together - SureFlap Microchip Pet Door Tunnel Extender (White) - SureFlap-Sure Petcare Microchip Pet Door (White) - Sure Petcare - SureFlap - SureFeed Pack of Two SureFlap RFID Collar Tags --- ## 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.pe/products/18074363-microchip-pet-door-tunnel-extender-white](https://www.desertcart.pe/products/18074363-microchip-pet-door-tunnel-extender-white) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-04-23*