--- product_id: 414934466 title: "AC Window Seal LYUNIT 400cm/158Inch Portable Universal Window Seal Kit | for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-With Zip" brand: "lyunit" price: "325.29 DT" currency: TND in_stock: true reviews_count: 13 category: "Lyunit" url: https://www.desertcart.tn/products/414934466-ac-window-seal-lyunit-400cm-158inch-portable-universal-window-seal store_origin: TN region: Tunisia --- # boosts AC cooling efficiency 400cm universal fit super-strong zipper seal AC Window Seal LYUNIT 400cm/158Inch Portable Universal Window Seal Kit | for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-With Zip **Brand:** lyunit **Price:** 325.29 DT **Availability:** ✅ In Stock ## Summary > ❄️ Lock in the chill, lock out the heat — your AC’s new best friend! ## Quick Answers - **What is this?** AC Window Seal LYUNIT 400cm/158Inch Portable Universal Window Seal Kit | for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-With Zip by lyunit - **How much does it cost?** 325.29 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/414934466-ac-window-seal-lyunit-400cm-158inch-portable-universal-window-seal) ## Best For - lyunit enthusiasts ## Why This Product - Trusted lyunit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **No Tools, No Hassle:** Peel-and-stick installation with no drilling—set up in minutes. - • **Insect & Rain Shield:** Water-repellent fabric keeps bugs and rain out, protecting your indoor comfort. - • **Zip & Chill On Demand:** Durable zipper lets you open or close the window anytime without removing the seal. - • **Maximize Your Cool Zone:** Seals window gaps up to 400cm perimeter for ultimate air containment. - • **Slash Energy Bills & Carbon Footprint:** Enhances AC efficiency to cool faster and reduce electricity use. ## Overview The LYUNIT AC Window Seal is a 400cm portable, universal-fit kit designed to improve the cooling efficiency of mobile air conditioners and tumble dryers. Featuring a water-repellent, durable fabric with a high-quality zipper closure, it prevents hot air infiltration, insect entry, and rainwater intrusion. Easy to install with strong adhesive tape and no drilling required, it fits most standard windows and helps reduce energy consumption and carbon emissions while enhancing indoor comfort. ## Description Product Description Keeping your room cool for longer This air conditioning window seal can stop hot air by locking the hose between the window frame and the window itself. To keep your room cooler. Suitable for most standard window types, but cannot be used on left and right sliding windows or doors. Install Window Seals Align the center of the window seal with the center of the sash (red dot). Fasten the broad edge (red) to the window frame. Fasten the narrow edge (blue) to the window frame. Unseal the window. Keep the air conditioner hose out of the window. How to Identify the Right Side of a Window Seal Lay the window seal flat on the table. The red part of the curve represents the broad edge of the window seal. The blue part of the line represents the narrow edge of the window seal. The red dot indicates the center of the window seal. No More Insects Tired of disgusting flies and mosquitoes? The window seal can also keep flies, mosquitoes and other unwanted insects out! Save Energy, Protect the Earth Loves the earth, to reduce energy consumption and reduce carbon dioxide emissions, which is particularly high in summer due to the massive use of air conditioners. Water-repellent and High-quality materials The window seal is moisture-repellent and protects against rain. The zips are of high quality and incorporated into the material. The loop tape is firmly sewn together with the window seal, No drilling required. Stick the magic strip to the window frame (strong viscosity, very strong) and use the strip principle to adjust the edge of the soft fabric window pane to the adhesive strips. Use a zip to control the size of the opening. Review: Very useful for my recently bought AC - Very useful even though it’s a bit too long for my window Review: Works Well Once Installed Correctly - This window seal does exactly what it's supposed to do and helps my portable air conditioner work much more efficiently by preventing warm air from coming back into the room. The reason I'm giving it 4 stars instead of 5 is that the installation wasn't as straightforward as I expected. The instructions left me a bit confused, and I struggled to fit it properly on the first attempt. After watching a couple of YouTube videos, I understood how it should be installed and managed to fit it without any problems. Once in place, it created a good seal around the window and AC hose, and the difference in cooling performance was noticeable. Overall, it's a good product and works well, but be prepared to spend a little time figuring out the installation if you've never used one before. ## Features - Improve Cooling-Keep Cool: The sealing of the window increases the cooling performance of the air conditioner. This reduces general energy consumption, as the room cools down faster and maintains a stable temperature in the long term. At the same time, it can prevent the flying insects and spiders from entering the room through the window or window seam, and also prevents the entry of rainwater. - Save Energy-Protect the Earth: Loves the earth, this mobile air conditioning window seal helps to reduce energy consumption and reduce carbon dioxide emissions, which is particularly high in summer due to the massive use of air conditioners. LYUNIT Window seals for mobile air conditioners are the perfect choice for household. It can save your funds in electricity and environmental protection. - Easy to Install-No Drilling Required: Stick the supplied adhesive tape to the window frame, attach the air conditioning window seal to the window and frame and you're done. The window seal for air conditioning reliably prevents the return flow of warm outside air into the air-conditioned interior and directs the warm air from the air conditioner to the outside. - Super Zipper Function: For maximum hold of the climate hose. The window seal has extra strong zips that prevent automatic opening of the closure when using the climate hose. Additional support and attachment are included with the product. And you can open or close the window at any time without removing the window seal. - General AC Window Seal: The air conditioner window seal is suitable for all portable air conditioners. The material of the window seal air conditioner is durable, UV-resistant. The air conditioner window seal fits window with a maximum perimeter of 400 CM. It can also be used in a variety of other devices including dehumidifiers or dryers which come with a flexible exhaust hose. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08B1BQJ9J | | Air Conditioner Application | Air Conditioning | | Best Sellers Rank | 4,997 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 8 in Air Conditioner Parts & Accessories | | Brand | LYUNIT | | Brand Name | LYUNIT | | Colour | White | | Compressor Type | rotary_scroll | | Control Method | Remote | | Controller Type | Touch Control | | Core Material | Copper | | Country Of Origin | China | | Customer Reviews | 4.0 out of 5 stars 1,178 Reviews | | Efficiency | increased cooling efficiency | | Form Factor | Seal with Zipper | | Form factor | Seal with Zipper | | Included Components | 400 cm window seal + magic tape | | Installation Type | Moderate | | Inverter Type | No Inverter | | Is Electric | Yes | | Is Outdoor Unit Required | No | | Is Product Cordless | No | | Manufacturer | shenzhenshipenghaoanquanjishushiwuyouxiangongsi | | Model Name | KTB-1 | | Model Number | KTB-1 | | Number Of Circuits | 1 | | Operating Mode | Cooling | | Power Source | Corded Electric | | Power source | Corded Electric | | Seasonal Energy Efficiency Ratio (SEER) | 5 | | Seasonal energy efficiency ratio (SEER) | 5 | | Special Features | Waterproof, Easy To Install, Universal, Portable | | Special feature | Waterproof, Easy To Install, Universal, Portable | | UPC | 783902063891 | | Warranty Type | Limited | | Window Opening Maximum Height | 100 Centimetres | | Window Opening Maximum Width | 127 Centimetres | | Window Opening Minimum Height | 24 Inches | | Window Opening Minimum Width | 100 Centimetres | ## Product Details - **Brand:** LYUNIT - **Special feature:** Waterproof, Easy To Install, Universal, Portable - **Colour:** White - **Voltage:** 2.3E+2 Volts (AC) - **Power source:** Corded Electric - **Form factor:** Seal with Zipper - **Model name:** KTB-1 - **Warranty type:** Limited - **Control method:** Remote - **Core material:** Copper ## Images ![AC Window Seal LYUNIT 400cm/158Inch Portable Universal Window Seal Kit | for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-With Zip - Image 1](https://m.media-amazon.com/images/I/71gd131L2AL.jpg) ![AC Window Seal LYUNIT 400cm/158Inch Portable Universal Window Seal Kit | for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-With Zip - Image 2](https://m.media-amazon.com/images/I/61dFuU-vnEL.jpg) ![AC Window Seal LYUNIT 400cm/158Inch Portable Universal Window Seal Kit | for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-With Zip - Image 3](https://m.media-amazon.com/images/I/71phq8QTn6L.jpg) ![AC Window Seal LYUNIT 400cm/158Inch Portable Universal Window Seal Kit | for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-With Zip - Image 4](https://m.media-amazon.com/images/I/71VreXQ5xIL.jpg) ![AC Window Seal LYUNIT 400cm/158Inch Portable Universal Window Seal Kit | for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-With Zip - Image 5](https://m.media-amazon.com/images/I/712nzM391UL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very useful for my recently bought AC *by K***O on 1 June 2026* Very useful even though it’s a bit too long for my window ### ⭐⭐⭐⭐ Works Well Once Installed Correctly *by J***Y on 14 July 2026* This window seal does exactly what it's supposed to do and helps my portable air conditioner work much more efficiently by preventing warm air from coming back into the room. The reason I'm giving it 4 stars instead of 5 is that the installation wasn't as straightforward as I expected. The instructions left me a bit confused, and I struggled to fit it properly on the first attempt. After watching a couple of YouTube videos, I understood how it should be installed and managed to fit it without any problems. Once in place, it created a good seal around the window and AC hose, and the difference in cooling performance was noticeable. Overall, it's a good product and works well, but be prepared to spend a little time figuring out the installation if you've never used one before. ### ⭐⭐⭐⭐⭐ Fitted my window so I’m happy *by J***J on 11 May 2026* Easy to use Velcro provided with instructions with zippers to hang out duct. ## Frequently Bought Together - AC Window Seal, LYUNIT 400cm/158Inch Portable Universal Window Seal Kit for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-With Zip - Air Conditioning Unit Portable Air Conditioner 9000 BTU 4-in-1 Dehumidifier, Cooling Fan with 2 Speeds, Digital Display & Remote Control, Window Kit, 24 Hour Timer for Room Up to 269sq.ft --- ## 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.tn/products/414934466-ac-window-seal-lyunit-400cm-158inch-portable-universal-window-seal](https://www.desertcart.tn/products/414934466-ac-window-seal-lyunit-400cm-158inch-portable-universal-window-seal) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-24*