Holmes HAP716-U Allergen Remover Tower Purifier Purify Technology: HEPA Operates Room Size: 150 sq.ft. CADR Rating: Smoke CADR: 100 Speed Setting: 3 speeds Feature: True Hepa filtration removes up to 99.97-percent of airborne allergens from air that passes through the filter Washable pre-filter captures larger particles 3 Speed settings provide options for different conditions, and optional ionizer assists in particle removal Filter life monitor alerts you when filter changes are needed to maintain maximum performance. Recommended for rooms up to 150 square-feet (8-feet by 10-feet) Electrical Outlet Plug Type: See Details