This fan has very little airflow, it doesn't fit in a window well, nor does it run in the proper direction. 1. The airflow is very limited, the small fans spin and flail without moving any air. The tiny blades on the tiny fan bodies are unable to produce a high volume flow (the velocity is fine, but the volume of air moved is much more important). 2. The design is not secure in the window. It seemed like the fan was barely balancing on the sill. 3. This fan blows. It makes a little bit of wind, but the real purpose of a fan should be to bring fresh air into a room. To run this fan in the proper direction (exhaust mode), the bulbous back of the fan (that by the design of the fan is meant to protrude into the room) butts up against the windowscreen, which would have to be removed to keep the fan from falling out the window. All in all, this is one of the worst window fans I have ever had the misfortune of purchasing. It was promptly returned to Amazon.

broke in a month

Haven’t had this fan for a month and the middle fan has stopped working!

For 3 fans it’s worthless. You can bearly feel any air.

Two months and I'm down to two fans.

I had this for 5 months and one of the motors is failing already. Also has terrible power and not worth it. Stay away. Have to get a new one with better circulation already.

Has very little power.

Absolute junk two of the three fans died in a week

Junk

This does absolutely nothing to cool a room down