Product Detail Coverage Area: 900 sq. ft., Power Requirements: 115 VAC/50-60 Hz., Energy Consumption: 215 W (Max) Fan Type: 6 Fan Speed Settings, and 700 CFM Capacity, Air Delivery: 35-250 CFM (Max Speed) Includes: 1 Pre-Filter, 4 Hg Cartridges, Gas Phase Filter, and 4 Post Filter Sleeves Filters Life: Pre-filter last 6-8 mm, Gas phase filter last 1-3 yrs, Post Filter last 1-3 yrs Pollutant Filtration: Microbiological contaminants, VOC, Odors, Drill aerosol, Abrasion powder . The "IQAir Dental HG FlexVac Air Purifier" is best product for you. We recommended IQAir Dental HG FlexVac Air Purifier