Amaircare 2500 HEPA Air Filter- White HEPA portable air cleaner uses HEPA filter as part of a three stage air filter system . The three stage air filtration includes a pre-filter a HEPA filter and a post filter. Sturdy 24 gauge cold rolled steel case powder coated baked enamel finish in white black or sandstone. Variable speed German motor with 5 year warranty. Reduce dust pollen and other allergens in medium sized rooms. HEPA is a filtration standard established by the U. S. Atomic Energy Commission. Americair manufactures its own Amaircare brand HEPA filters. Filament is bonded to air filter media for structural support and even pleat spacing. After pleating filters are enclosed in protective screens and cast in food-grade plastisol at both ends for a 100% air seal. Each Amaircare HEPA filter is then tested for 99.97% efficiency with a laser particle counter. Save on shipping buy an additional year of replacement filters when you buy your air cleaner. Avoid delays when filters need changed. Amaircare Model 2500 HEPA Air Filter Specifications German motors for durability and long life. Dimensions 13.5' H x 16' W Weight 15 pounds Shipping weight 19 lbs. Variable speed operation 50 to 175 cfm air flow Power Consumption 41 to 84 watts 120V 60Hz 230V 50 60 Hz also available Coverage area 300 to 650 sq. ft. Based on 2-4 air exchanges per hour. Warranty 5 year by Amaircare