The Insignia 497 Sq. Ft. HEPA Air Purifier removes allergens large irritants mold dust pet dander smoke and pollen with the included HEPA filter. The active carbon filter also removes odors keeping your house smelling clean and fresh. An LED display makes it easy to check the air quality of your home and change the settings of the air purifier such as the speed timer or child lock. It’s ideal for a large-sized room up to 497 sq. ft.