EZ-Chill 9" Twin Window Fan with Manually Reversible Airflow Control, Auto-Locking Expanders

2 SPEEDS, THE FASTEST IS A LITTLE SLOWER THAN THE OTHER BRANDS. FITS WELL INTO ANY WINDOW FRAME %26 HAS NICE STANDS THAT ARE OPTIONAL FOR A DESK OR NEAR A WINDOW TO BLOW AIR IN. THE STANDS CAN BE TAKEN OFF %26 PUT ON ANYTIME, VERY CONVENIENT %26 STABLE. NICE VALUE FOR THE PRICE. THE FILLERS ON THE LEFT %26 RIGHT OPEN UP %26 LOCK EASILY UNLIKE SOME OF THE OTHER BRANDS DO NOT.

This has been a pretty good vary no frills fan. It is bare bones just two fans and a switch. I like that there is not any sensitive electronics to break from dust and long use. After a couple weeks constant use I see no sings of it slowing. Low mode seemed a bit weak, but high mode blowing out the window has been keep a good breeze going. My only gripe with it is the advertising. It tells us it has an air exchange mode. From any fan I've seen that would mean one blows in one blows out. I can't find what they meant by that, the fan blow one way "only". That brings me to the next point. It says it has reverse mode. By that it means you can take it out of the window and flip it around by hand, then put it back in the widow facing the other way. Not what I expected, but it works as stated. Also the on/off high/low switch can be easily used from either side. So handy if you flip it around. The extendable sides do work, but there is still a lot of gaps on the top and bottom. It does have removable feet, to set it on the floor or table when not in the window. they work fine. All said, it is just a double fan that can be put in a window or on a table. So if that's all I need and the price is still right I'd buy another.