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❄️ Seal in the cool, seal out the FOMO!
The LYUNIT AC Window Seal Kit is a 400cm universal, waterproof, and UV-resistant sealing solution designed to optimize portable air conditioner efficiency. Featuring a no-drill adhesive installation and a robust zipper closure, it prevents warm air, insects, and rain from entering your space while reducing energy consumption and carbon emissions. Compatible with most windows and flexible exhaust devices, it’s the smart, eco-conscious choice for maintaining a cool, comfortable environment.








| ASIN | B08B1BQJ9J |
| Air Conditioner Application | Air Conditioning |
| Best Sellers Rank | 109,914 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 | Copper |
| Country Of Origin | China |
| Customer Reviews | 4.1 out of 5 stars 1,252 Reviews |
| Efficiency | A |
| Form Factor | Seal with Zipper |
| Form factor | Seal with Zipper |
| Included Components | 400 cm window seal + magic tape |
| Installation Type | Window |
| Inverter Type | No Inverter |
| Is Electric | Yes |
| Is Outdoor Unit Required | No |
| Is Product Cordless | No |
| Manufacturer | shenzhenshipenghaoanquanjishushiwuyouxiangongsi |
| Model Name | KTB |
| Model Number | KTB |
| 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 |
M**D
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 👌.
M**L
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.
J**Y
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.
J**.
Easy to fit and great seal
Easy to fit, does a great job sealing the window and keeping out the draft.
M**E
Decent temporary solution.
Was able to fit the product around a standard window, hinge to the left, handle on the right, majority of window opens outwards, with a small portion on the left side which moves in at an angle. I was able to put the velcro up with ease and attach the material to it. The zip is pretty flimsy and has dislodged a couple times leading to the overall zip bunching up in areas. Most of the time, once the AC is on, I can see many gaps start to appear where the adhesive isn't great, but generally it provides enough coverage to work.
B**Y
Poor seal. Unfit for purpose.
If your perimeter is not exactly the size, you will be left with an air gap, also the seal does not travel over corners well, so leaves more air gap. I would say this is designed poorly and is absolutely not going to create a seal. This is expensive also compared to eBay options. I would not recommend you purchase at all.
D**T
HIGHLY RECOMMEND
Measured to big, but still does the job at keeping the hot air from blowing back in from the AC highly recommend
K**O
Very useful for my recently bought AC
Very useful even though it’s a bit too long for my window
G**Y
Neem de tijd
Het is van belang het kozijn goed schoon te maken en netjes af te meten, vervolgens goed aandrukken zodat het lijm goed hecht. Het heeft me een uurtje gekost maar hij zit perfect en laat niet los.
A**A
Cumple su función
Funciona bien, es verdad que a veces se despega. Pero funciona bien
C**N
Ne convient absolument pas pour des fenêtres battantes et portes fenêtres à fuir !!!
Ne convient absolument pas pour des fenêtres battantes et portes fenêtres à fuir !!!
E**O
Muy grande
Para nada es muy grande
L**U
Pas simple
J émets des réserves parce que franchement ce n'est pas simple à placer seul. Par contre cela tient au niveau du collant. Mais pas d esthétisme . Et heureusement qu il y a des vidéos sur le Web pour aider d un autre côté c'est pour l air co. Donc ....mais côté rue c'est affreux de l extérieur. Les gens le remarquent parce que tout le monde n a pas de fenêtre guillotine donc pas trop le choix.
Trustpilot
2 weeks ago
1 month ago