Fan powered HEPA filters are available in two sizes, 2'x4' and 2'x2'. The overall height of the unit is 12". The unit has a 1/4 hp motor. The standard unit comes equipped with a three speed fan, a metal hood, a perforated metal face, a 6' power cord and with four eye bolts. The unit has a noise level of less than 56 dba when operating at high speed.