--- product_id: 623297399 title: "AC Window Seal Portable Universal Window Seal Kit 300cm/118Inch" brand: "lyunit" price: "€ 46.73" currency: EUR in_stock: true reviews_count: 13 category: "Lyunit" url: https://www.desertcart.hr/products/623297399-ac-window-seal-portable-universal-window-seal-kit-300cm-118inch store_origin: HR region: Croatia --- # 300cm universal fit Super-strong zipper seal Boosts AC cooling efficiency AC Window Seal Portable Universal Window Seal Kit 300cm/118Inch **Brand:** lyunit **Price:** € 46.73 **Availability:** ✅ In Stock ## Summary > ❄️ Lock in cool vibes, unlock energy savings! ## Quick Answers - **What is this?** AC Window Seal Portable Universal Window Seal Kit 300cm/118Inch by lyunit - **How much does it cost?** € 46.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/623297399-ac-window-seal-portable-universal-window-seal-kit-300cm-118inch) ## 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 - • **Eco-Friendly Energy Saver:** Cut carbon emissions and electricity costs while staying cool and responsible. - • **Built to Last, Rain or Shine:** Durable, UV-resistant, and waterproof materials keep your space protected year-round. - • **Flexible & Functional Design:** Compatible with all portable ACs, dehumidifiers, and dryers—plus, open your window anytime without removing the seal. - • **Seal in the Cool, Seal out the Heat:** Maximize your AC’s cooling power and slash energy bills with a tight, universal 300cm fit. - • **Effortless Installation, Zero Drilling:** Stick, zip, and chill—no tools, no hassle, just instant climate control. ## Overview The LYUNIT AC Window Seal Kit is a 300cm universal, waterproof, and UV-resistant sealing solution designed for portable air conditioners. It enhances cooling efficiency by preventing warm air infiltration, reduces energy consumption and carbon footprint, and features a durable zipper for secure hose attachment. Easy to install with adhesive tape and compatible with various devices, it offers a practical, eco-conscious upgrade for any modern home. ## Description Great prices on your favourite Home brands, and free delivery on eligible orders. Review: Works Great On Ac Vented Fan Universal - Needed for my ac fan and not to draw heat during this heatwave. Kept the ac cold air in while sealing out the heat. Easy to install and cheap 👌. Review: Easy to put and good zips! - Very pleased with this. Easy to put on and does the job. You can close your window with it on so only remove during g the window. Very good. ## 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 300 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 | B09Q5Y4DXZ | | Air Conditioner Application | Mobile | | Best Sellers Rank | 109,938 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 49 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 | Lightweight material | | Country Of Origin | China | | Customer Reviews | 4.1 out of 5 stars 1,252 Reviews | | Efficiency | A | | Form Factor | Window Seal for Portable Air Conditioners with Retractable Zipper | | Included Components | Adhesive Tape, Zipper, Cable Ties | | Installation Type | Window | | Inverter Type | No Inverter | | Is Outdoor Unit Required | No | | Is Product Cordless | No | | Manufacturer | shenzhenshipenghaoanquanjishushiwuyouxiangongsi | | Model Name | KTB | | Model Number | KTB | | Number Of Circuits | 1 | | Number of Power Levels | 1 | | Number of Tubes | 1 | | Operating Mode | Cooling | | Power Source | Corded Electric | | Power source | Corded Electric | | Room Type | Bedroom | | Seasonal Energy Efficiency Ratio (SEER) | 14 | | Seasonal energy efficiency ratio (SEER) | 14 | | Special Features | Waterproof, Easy To Install, Universal, Portable | | Special feature | Waterproof, Easy To Install, Universal, Portable | | Start Year | 2022 | | Start year | 2022 | | Unit Count | 1.0 count | | Warranty Type | Limited | | Window Opening Maximum Height | 300 Centimetres | | Window Opening Maximum Width | 150 Centimetres | | Window Opening Minimum Height | 20 Inches | | Window Opening Minimum Width | 150 Centimetres | ## Product Details - **Brand:** LYUNIT - **Colour:** White - **Control method:** Remote - **Controller type:** Remote Control - **Form factor:** Portable - **Inverter type:** No Inverter - **Model name:** 560cm - **Power source:** Corded Electric - **Warranty type:** Limited ## Images ![AC Window Seal Portable Universal Window Seal Kit 300cm/118Inch - Image 1](https://m.media-amazon.com/images/I/71gd131L2AL.jpg) ![AC Window Seal Portable Universal Window Seal Kit 300cm/118Inch - Image 2](https://m.media-amazon.com/images/I/61zvrxHsqaL.jpg) ![AC Window Seal Portable Universal Window Seal Kit 300cm/118Inch - Image 3](https://m.media-amazon.com/images/I/71phq8QTn6L.jpg) ![AC Window Seal Portable Universal Window Seal Kit 300cm/118Inch - Image 4](https://m.media-amazon.com/images/I/71VreXQ5xIL.jpg) ![AC Window Seal Portable Universal Window Seal Kit 300cm/118Inch - Image 5](https://m.media-amazon.com/images/I/712nzM391UL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works Great On Ac Vented Fan Universal *by M***D on 22 August 2026* Needed for my ac fan and not to draw heat during this heatwave. Kept the ac cold air in while sealing out the heat. Easy to install and cheap 👌. ### ⭐⭐⭐⭐⭐ Easy to put and good zips! *by M***L on 18 August 2026* Very pleased with this. Easy to put on and does the job. You can close your window with it on so only remove during g the window. Very good. ### ⭐⭐⭐⭐ 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. ## Frequently Bought Together - AC Window Seal, LYUNIT 560cm/220Inch Portable Universal Window Seal Kit for Mobile Air Conditioner Unit & Tumble Dryer, Hot Air Stop Air Exchange Guards, Easy to Install-with Zip - AC Window Seal,Portable Universal Window Kit for Mobile Air Conditioner Unit and Tumble Dryer 400cm/158Inch,Hot Air Stop Air Exchange Guards with Zip and Adhesive Fastener - Bysameyee Portable Air Conditioner Hose, 15cm Diameter 200cm Length AC Exhaust Vent Flexible Hose, Anti-Clockwise Thread Air Conditioner Parts Compatible with LG, Delonghi and More --- ## 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.hr/products/623297399-ac-window-seal-portable-universal-window-seal-kit-300cm-118inch](https://www.desertcart.hr/products/623297399-ac-window-seal-portable-universal-window-seal-kit-300cm-118inch) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-13*