Honeywell Enviracare air purifiers are perhaps one of the favorite products doctors recommend to their patients. This model offers outstanding performance with a non-permanent True HEPA filter. It removes 99.97% of common irritants and allergens, like dust, pollen, tobacco smoke and cat dander as small as 0.3 microns from the air. Helps reduce airborne germs, bacteria, mold spores and fungus with up to 100% efficiency. HEPA filter never needs replacement; just vacuum twice a year! The carbon pre-filter captures larger airborne particles and helps remove common household odors. Intelli-Check electronic filter indicator reminds you when to clean the HEPA filter and when to replace the carbon pre-filter. Designed for rooms up to 374 sq. ft. You and your family deserve fresh air, free of germs and allergens! Purify Technology: HEPA, Activated Carbon Operates Room Size: 17' x 22' (374 sq.ft.) CADR Rating: 250 (Smoke) Speed Setting: 3 speeds Color: White Height: 19" Width: 18" Length: 18"