The Blueair Blue Pure 511 Air Purifier with HEPASilent Combination Filter is a stylish and efficient appliance for improving air quality in your home. With a sleek blue design and compact dimensions of 20 x 20 x 34 cm, this air purifier is perfect for any room. The HEPASilent combination filter ensures clean and fresh air while the operating sound rating of 49 dB keeps it running quietly in the background. Upgrade your heating, cooling, and air quality systems with this reliable product from Blueair.