The XPOWER X-3400A 3 Stage Air Scrubber is a commercial purification system featuring a powerful external rotor induction motor that produces 600 CFM with only a 2.8 Amp draw. Developed to restore indoor air quality at a variety of job sites - the X-3400A with HEPA filter effectively removes contaminants such as bacteria, allergens, mold and sub-micron sized dust with its advanced 3 stage filtration technology. The 1st stage nylon mesh filter is washable and prolongs the life of the two inner filters. The 2nd pleated media filter removes additional impurities, and the 2 inch. thick HEPA filter is capable of capturing 0.3 sized microns at a 99.97% rate as well as smaller and larger particulate matter at an even greater rate. A convenient indicator light notifies you when the HEPA filter needs replacement. The X-3400A features a variable speed control switch and built-in daisy chainable power outlet. Stackable and lightweight for easy transport, the attached fitted foam cap functions to contain contaminants. It's unique, compact size and lightweight design is ideal for both water damage restoration and construction jobs. An optional Activated Carbon Filter is available to effectively neutralize smoke and other noxious odors present in the environment. In order to use a CF35 Activated Carbon Filter with this unit a 1.4-in thick HEPA35 HEAP Filter must also be purchased. Then this unit will be ready for use to effectively clean the air and eliminate odors.