Removes staining dirt from the air, as measured by the Initial Dust Spot Method using atmospheric dust; refer to the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) Standard 52.1-92.
Three-speed fan circulates up to 1250 cfm (35 cu m/minute).
Solid state power supply is self-regulating, maintains peak efficiency over a wide range of cell dirt-loading conditions, and provides nonlethal current levels.
Interlock switch prevents operation when cover is open or grille is not in place.
Heavy-duty commercial cells, prefilter, and grille are removable for cleaning.
Three-position adjustable discharge louvers control direction of discharged air.
Light-emitting diodes (LED) indicate ON and CHECK; WASH LED optional.