Filters from 360 degrees.  Doesn't take up much space.  Quiet on fan speeds 1 & 2, a bit more fan noise with speed #3 and quite a bit on noise on fan speed #4.  We like the UV light for helping filter out germs.  Easy to maintain and clean.  We have had this unit for a little over a month now and so far so good. It is a simple design that works.