The Dyson Purifier Big+Quiet Formaldehyde is our biggest purifier yet, engineered from the ground up, to evenly purify large spaces.¹ Cone aerodynamics creates a condensed jet of air to project purified air over 32 feet. Quietly. An advanced 360 HEPA H13 grade filter captures allergens and 99.97% of fine particles⁴. Removes gases and odors.² Destroys formaldehyde, permanently.³ Recommended for rooms upto 73 Sq Ft. | Dyson | | Purifier Big + Quiet Formaldehyde BP03 | Bright Nickel/Prussian Blue | Best Buy