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

Product ID: 61616905

Details

Brand
HOOMEE
Colour
White
Control method
App
Efficiency
Improves
Form factor
Portable
Installation type
Window

⚡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
Air Conditioner Application	Portable Air Conditioner
Best Sellers Rank	724,836 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 56 in Air Conditioner Replacement Stoppers
Brand Name	HOOMEE
Colour	White
Control Method	App
Customer Reviews	4.1 4.1 out of 5 stars (12,879)
Efficiency	Improves efficiency
Form Factor	Portable
Included Components	Mounting Hardware
Installation Type	Window
Is Outdoor Unit Required	No
Item Weight	0.4 Kilograms
Manufacturer	HOOMEE
Model Name	AL003
Model Number	AL003
Power Source	Battery Powered
Room Type	Living Room
Special Features	Eco-Friendly
UPC	708315566043
Window Opening Maximum Height	400 Centimetres
Window Opening Maximum Width	400 Centimetres
Window Opening Minimum Height	157 Centimetres
Window Opening Minimum Width	400 Centimetres

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