Hunter"s purifiers feature Whisper-Quiet fan technology for more peaceful protection. High performing, Hunter purification systems quickly and effectively removing 99.97% of dust, smoke, and pollen particles as small as 0.1 microns in size. It changes the air up to 6 times an hour and has 30% better odor reduction. Manufacturer: Hunter Fan Co. Manufacturer Part Number: 30027 Manufacturer Website Address: Brand Name: Hunter Fan Product Line: HEPAtech Product Model: 30027 Product Name: HEPAtech 30027 Air Purifier Product Type: Air Purifier Air Filter: HEPA Particle Removal: 0" Removal Rate Buttons & Controls: 3-Speed Control Status Indicators: Filter Change Indicator Standard Warranty: 5 Year Limited