I got this for use in a 22 inch window in a 10'x11' room (110 sqft). I've had window units before but have never had to install one. The instructions were helpful with diagrams and the unit was fairly easy to install since it's light-weight. The unit is a good size for that window but it can not be installed with both accordion-style 'filler panels' on the sides. I used a filler panel on one side and, since we have not yet reached summer temperatures, I temporarily used plastic bubble wrap on the side to test it out the a/c. It needs some better weather proofing for both sides because you can see daylight through the bottom of the accordion-filler itself, which means bugs and/or moisture can get through. It does come with a good quality weather strip, but I need a more than that on the sides. The unit function is very basic. There are 2 fan functions (high/low) and 2 "cool" functions (high/low) and a cooling gauge that ranges from 1 through 7. The vents allow good airflow and on one of the first 75F days it cooled the room quickly after a full day of direct sun. I hope weather stays mild, but I think this room is now ready for summer temps. 4.5 because of filler panels / weather proofing.
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