Air Lock for Portable Air Conditioner,Window Seal for Mobile Air Conditioning. Max Size 14x60 Inch

This is a great window seal for some more awkward types of windows. I have a wide window with two upper narrow windows that open. You just simple wipe down the space you want to seal, secure the sticky Velcro and then fit the seal. It’s very simple, yes I have some extra material but it’s very easy to use the Velcro fastening to secure it. The zipper function works perfectly fine to secure your vent between the zippers and then fasten a zip tie for added security. I have read some of the recent reviews and I am quite surprised by them, I am extremely happy with my purchase and I was very impressed with how quickly I received it from USA. This window is the the only window seal product I would recommend!

Works well. Blocks the heat coming back in.

It works and the Velcro is very durable. The system managed to seal up an 8” exhaust vent 97% of the way. Small areas of leakage even with cinched down zip ties but from what I could tell rain would have some trouble getting in. I used it for a crypto mining exhaust and the material could handle the heat / weight of the exhaust vent. However the fabric is pretty thin and transparent. A lot of light, and temperature can pass through pretty easily. I think it is a perfect solution in a pinch but long term I would maybe look into a more permanent product

This was fairly easy to install. I wouldn’t say it’s very durable. But what I didn’t really think about was how bad humidity gets in Florida. Since it’s a thin vinyl like fabric, it definitely doesn’t have the ability to insulate in that it allows heat into the room and the humidity. So what’s the point?

I have 2 portable air conditioners that have a problem every summer with hot air from hose and outdoors leaking in. I found these products by accident on Amazon and figured I'd give them a try, anything would be better than the hard plastic vents which came with the units that are difficult to use. These were so EASY to install and really work so well, no air getting in and air from unit being directed out. I also can quickly take air hose out of window if it's raining too hard and reinstall in seconds when needed. Window is not damaged in any way and can always get more Velcro tape if needed but since I have installed them I have had no problem with them coming loose at all. Highly recommend this product!

I wasn't a fan of this product. It did not create a full seal around the window, I had to fill gaps with duct tape, and the room would not stay cool during the day. I had to buy a proper PVC vent seal that fits my window, and take this down. If you're in an area that's not that hot, it may work for you, but for me, this just wasn't worth the investment.