I personally think whoever invented this it was a dumbest idea ever. It's so bulky. It's basically like having a regular window unit sitting inside your house. I thought it would have been a lot more slimmer. But it takes up a lot of space. Even outside the window it's more bulkier than a standard window unit.  The air condition works great. But it does not take up less space. The only thing you gain with this is about six more inches of window. Other than that I would not recommend it. It is a complete waste of space. Stick to a standard window unit for way less of price.