Does anyone know if there is any demonstration video to show me how to install the window seal? I have some challenges to install it.

For inward open window, you can refer to the installation video https://youtu.be/35aNfQWsjwg

how do i know if i need a 300cm or 400?

Hello, you can measure four open sides of the window and calculate the total length of them, if the total length is equal or less than 300cm, than you can select 300cm size, if equal or less than 400cm, than you can choose 400cm size. Important note, if you open the window, there is no gap where the window is attached to the frame, then you can just need to measure three open sides. Anything unclear please contact us via info@hoomee.com ,Thank you.

Will it work with a skylight?

Hello, it is open from the top, then it can work, if it is center pivot window, it doesn't Thank you.

Will this work on my windows that open outward?

Yes, a window that opens outward is what I installed it on. Follow the directions very carefully, they are complicated, but they work.

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HOOMEE 157”(400CM) Universal Window Seal for Mobile Air Conditioner and Tumble Dryer – Window Kit Works with Portable AC, Easy to Install - Air Exchange Guards with Zip and Adhesive Fastener

HOOMEE 157”(400CM) Universal Window Seal for Mobile Air Conditioner and Tumble Dryer – Window Kit Works with Portable AC, Easy to Install - Air Exchange Guards with Zip and Adhesive Fastener

Product ID: 61524837

Details

Brand
HOOMEE
Color
White
Material
Fabric
Opacity
1 inches
Product Dimensions
157"L x 15.7"W

⚡energy-saving seal

📏157-inch universal fit

🔧tool-free installation

¥6914

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Description

❄️ Stay Cool, Save Green – The Ultimate Window Seal for Smart Living

NO TOOLS NO HASSLE - Adhesive hook tape installation means zero drilling or extra adapters
ZIP IT TIGHT KEEP IT RIGHT - Durable zipper closure ensures airtight seal around exhaust hose
UNIVERSAL FIT FOR EVERY WINDOW - Fits windows up to 157 inches perimeter—left, right, skylight, or bottom-hung
SEAL OUT THE HEAT SEAL IN THE COOL - Blocks hot air leakage for faster, more efficient cooling
CUT YOUR ENERGY BILLS NOT YOUR COMFORT - Reduces energy consumption and carbon footprint during peak summer

The HOOMEE 157” Universal Window Seal is a durable, easy-to-install fabric kit designed to seal gaps around portable AC and tumble dryer exhaust hoses. Featuring a secure zip closure and adhesive hook tape, it fits windows up to 400 cm perimeter, blocks hot air infiltration, boosts cooling efficiency, and reduces energy consumption—perfect for eco-conscious professionals seeking hassle-free climate control.

Specifications

ASIN	B07BPZGJ3B
Additional Features	Tool Free Installation
Best Sellers Rank	#16,002 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #22 in Accessories (Home & Kitchen)
Brand Name	HOOMEE
Closure Type	Zipper
Color	White
Control Type	Manual
Customer Reviews	4.1 4.1 out of 5 stars (12,678)
Included Components	Adhesive hook tape, zip closure
Item Dimensions L x W	157"L x 15.7"W
Item Weight	0.4 kg
Manufacturer	HOOMEE
Material Type	Fabric
Model Number	AL003
Mounting Type	Inside Mount
Number Of Panels	1
Number of Items	1
Opacity	1 inches
Operation Mode	Manual
Product Care Instructions	Spot Clean Only
Recommended Uses For Product	Indoor
Room Type	Bathroom
Shape	Rectangular
Size	157 Inch
Specific Uses For Product	Sealing windows, blocking hot air, air exchange
UPC	708315566043
Water Resistance Level	Not Water Resistant

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¥6914

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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