--- product_id: 101567859 title: "Mythfly Cat Door - Large (Outer Size 9.9\" X 9.2\") 4 Way Locking - Cat Doors For Interior Doors - Waterproof Pet Door for Cats Small Dog with Circumference Shorter Than 23\"" brand: "kchex" price: "FREE" currency: EUR in_stock: false reviews_count: 8 url: https://www.desertcart.de/products/101567859-mythfly-cat-door-large-outer-size-9-9-x-9 store_origin: DE region: Germany --- # Mythfly Cat Door - Large (Outer Size 9.9" X 9.2") 4 Way Locking - Cat Doors For Interior Doors - Waterproof Pet Door for Cats Small Dog with Circumference Shorter Than 23" **Brand:** kchex **Price:** FREE **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** Mythfly Cat Door - Large (Outer Size 9.9" X 9.2") 4 Way Locking - Cat Doors For Interior Doors - Waterproof Pet Door for Cats Small Dog with Circumference Shorter Than 23" by kchex - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/101567859-mythfly-cat-door-large-outer-size-9-9-x-9) ## Best For - kchex enthusiasts ## Why This Product - Trusted kchex brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Mythfly Large Cat Door with 4 Way Locking Cat Flap Door, White Pet Door Kit for Kitten & Small Dog 4 Way Locking: ①Fully Locked - Turn Red and Green switches to both sides, pet is prevented from entering or exiting house. ②In Only - Turn Red and Green swithes to right side, pet is allowed to enter house, but prevent from exiting house. ③Out Only - Turn Red and Green switches to left side, pet is allowed to exit house but prevent from entering house. ④Fully Open - Turn Red and Green switches to middle, pet can leave and exit any time. How to Install? 1. Draw outline on the door Draw the cat door frame on a paper board and cut it down. Use a pencil draw around the edge of the cut paper on the door you want to be fixed to. 2. Cut out a tunnel hole First, you'd better drill holes in the corners of the outline. To do this is for cutting out the whole block of tunnel hole with a saw. 3. Wrap the tunnel hole After the tunnel hole is cut out, it's better to wrap around it with a layer of wood skin. And if your hole is cutting a little big, it's quite neccessary. 4. Cut depth if necessary If the cat flap door is too thick for the door you want to be fixed to, use a scissors, saw or cutting machine to cut along the line A or B as shown. 5. Mount to the door Mount the cat flap with double-side tape to the door. 8 Screws have been provided for your use, tighten them with a screwdriver on both sides. 6. Done Place screw caps to screw holes, press them on. The assembling process is then completed perfectly. What's in the box? 1 * Large Cat flap door 8 * Screws 8 * Screw caps 1 * Installation instructions ## Features - About this item 😼 【High Quality Material】Made of premium ABS material, weather-resistant, the surface is smooth, durable and convenient for your pet. Wide opening allows your cat to pass through SAFELY, without tails getting snagged or caught up. 😼 【4-Way to Lock】The flap is lockable,you can adjust the lock to open,in only,out only or fully locked,it's easy to let cats just in,just out,in and out,can't in or out.So you can adjust the flat freely according your mood. 😼 【Large Size for Cats】 The outer size of the cat door is about 2.16"(D) x 9.25"(W) x 9.96"(H),and the inner size 2.09"(D) x 7.04"(W) x 7.48"(H). It's suitable for cat lighter than 17.64 lb and waist circumference shorter than 23.62".Most of your cats can use this pet door freely. 😼 【Fits for Various Doors】This cat flap can be installed in glass door,wooden door,steel door,security door and glass window.And it can stop the air conditioner from leaking.There are some scales in the side,so you can cut the flap if you want a thinner flap to fit your door or wall. 😼 【Easy Insallation】You will get a cat flap installation, from how to measure size on your door to finish installation, detail instruction. Our cat door liner up to 50mm thick, if you have a thin door, you can adjust the liner and cut it to the actual needs. ## Images ![Mythfly Cat Door - Large (Outer Size 9.9" X 9.2") 4 Way Locking - Cat Doors For Interior Doors - Waterproof Pet Door for Cats Small Dog with Circumference Shorter Than 23" - Image 1](https://m.media-amazon.com/images/I/41Ssjb4ct0L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great For Keeping Dogs Out *by H***S on Reviewed in the United States on March 4, 2019* I got this for my mom because her dogs would go into her room and eat all the cat food. She has medium to small sized dogs that were too large to fit through this door. We placed it 4-6 inches from the bottom of the door rather than it meeting the floor. The cats jump through it perfectly and it worked perfect for what we needed it for. ### ⭐⭐⭐⭐⭐ Work exactly as I needed it. *by A***L on Reviewed in the United States on April 25, 2019* This cat door is awesome. I rescued a one year old cat from our local animal shelter and had the cat door installed into a six panel steel insulated door from our laundry room into our garage where the cat litter tray is located. We taped the door wide open for a week or so, then slowly kept lowering it for the next couple weeks. We then coaxed her through the closed door with special treats a couple times and, voila, she's been using it ever since. It's quiet and it's nice that she can see through it. I would definitely recommend this product. ### ⭐ AVOID. This Is Very Cheap, Leaky Garbage *by E***R on Reviewed in the United States on October 8, 2019* I know what I am talking about because i am a professional builder.This pet door is very badly & cheaply designed garbage designed to leak and even fall off your door: #1 it's designed backwards #2 its not energy efficient because it has cracks all around the weather stripping on the flap #3 it will will likely leak rain in as well. #4 cheap fastening hardware cannot secure this junky product to most doors.Details the weather seal around the door doesn't touch the frame, leaving gaps all the way around, so it's an energy waster. But that isn't all. The flap that doesn't weather seal is on the OUTSIDE frame (the one with the weather seal to the door around the hole) instead of on the inside, where it would be recessed away from the weather and less vulnerable;e to rain leakage.which means that slanted or horizontal rain can get in VERY EASILY.and the fasteners are 8, 4 from each side. the problem with this is that MOST DOORS are essentially hollow, with insulation or even cardboard beneath thin veneers of wood or metal and cannot be fastened to, especially not by these TINY thin cheap screws! My door, LIKE MOST DOORS, is essentially hollow with just insulation inside and not suitable at all to fasten anything to. THAT'S WHY DOOR KNOBS COME WITH SCREWS LONG ENOUGH TO GO THROUGH DOORS AND INTO THE OTHER SIDE OF THE KNOB! DUH!! But even if the screws were more robust, the other half of the frame doesn't have threaded holes or integrated nuts to catch and screw in and properly sandwich the the door with the frame.I would devise my own mounting solution, such as buying the proper length screws and nuts and still use this product EXCEPT THAT IT'S BADLY DESIGNED,BACKWARDS AND LEAKY which I cannot think of a solution for. even if I find and am able to find and install better weather stripping on the flap or the frame to fill the cracks between the frame and flap, there's still the problem of the flap being on the outside ,flush with the door surface instead of recessed from the outside LIKE IT SHOULD BE. --- ## 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.de/products/101567859-mythfly-cat-door-large-outer-size-9-9-x-9](https://www.desertcart.de/products/101567859-mythfly-cat-door-large-outer-size-9-9-x-9) --- *Product available on Desertcart Germany* *Store origin: DE* *Last updated: 2026-04-22*