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 400CM Universal Window Seal for Portable Air Conditioner And Tumble Dryer – Works with Every Mobile Air-Conditioning Unit, Easy to Install - Air Exchange Guards With Zip and Hook Tape

HOOMEE 400CM Universal Window Seal for Portable Air Conditioner And Tumble Dryer – Works with Every Mobile Air-Conditioning Unit, Easy to Install - Air Exchange Guards With Zip and Hook Tape

Product ID: 61616905

Details

Brand
HOOMEE
Colour
White
Material
Polyester
Opacity
1 inches
Product dimensions
4L x 0.43W

⚡Reduces energy consumption

🌀Blocks warm air return

🔧Tool-free adhesive install

Description

❄️ Keep your cool and your energy bills cooler with HOOMEE!

HASSLE FREE SETUP - No drilling or extra tools needed—adhesive hook tape and zipper included.
ECO FRIENDLY ENERGY SAVER - Cuts electricity use and carbon footprint during peak summer months.
UNIVERSAL FIT FOR ANY DOOR - Fits doors up to 90x210cm, works with all portable ACs & tumble dryers.
SEAL OUT HEAT SEAL IN COOL - Locks hose between door & frame to keep hot air out and cool air in.
BOOST AC EFFICIENCY INSTANTLY - Zips tightly around hose to prevent warm air backflow, cooling faster.

The HOOMEE 90x210CM Zipper Screen Door Seal is a universal, tool-free solution designed to enhance portable air conditioner and tumble dryer efficiency by sealing the hose through your door. It prevents warm air from entering, reduces energy consumption, and is easy to install with included adhesive hook tape and zipper, fitting doors up to 90x210cm.

Specifications

ASIN	B07BPZGJ3B
Best Sellers Rank	677,921 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 74 in Air Conditioner Replacement Stoppers
Brand Name	HOOMEE
Closure Type	zipper
Colour	White
Compatible Devices	Portable Air Conditioners and Tumble Dryers
Control Type	Manual
Customer Reviews	4.1 4.1 out of 5 stars (12,820)
Included Components	Mounting Hardware
Item Dimensions L x W	4L x 0.43W metres
Item Shape	Rectangular
Item Weight	0.4 Kilograms
Manufacturer	HOOMEE
Material Type	Polyester
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	Living Room
Size	43W x 400H cm
Special Features	Eco-Friendly
Specific Uses For Product	Window
UPC	708315566043
Water Resistance Level	Not Water Resistant

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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The product exactly matches the description. Very satisfied with my purchase.

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