19 x 8 x 17 * Rated for a 12? x 12? room 7 air changes per hour 225CFM 19 x 8 x 17 * 7 air changes per hour * Multi-stage air purification system quietly outperforms competitive models * Removes 99.97% of all particles as small as .1 microns including: smoke dust pollen and virtually all airborne allergens * 3 speed fan provides effective air circulation without the noise associated with other systems * 5 Year Limited Warranty *