I really wanted a third air filter to put into my bedroom (have two larger ones in other parts of the house.  This one is perfect.  The perfect size, at the different settings.  It is quiet at it's lowest setting..  It cleans the air quickly and keeps it clean.  This filter is well-made and easy to use.  It was packaged well and I recieved it quickly.  I would recommend to anyone who needs a filter. It is great for a bedroom, or if you have a small place because it is small in size.  Though, If I needed it, It would work for a larger room too.