Bad smells, volatile organic compounds, fine dust, pollen, viruses and bacteria can worsen our air quality. Our air purifier Roger shows the air quality at home or in the office. With his two sensors, he continuously measures the quality of the room air and immediately detects contamination. The air quality indicator lets you know if air quality deteriorates by changing its color. The specially-developed Dual Filter™ combines a HEPA and activated carbon filter. The HEPA filter is very efficient at purifying the air of pollutants and the activated carbon filter skillfully eliminates bad smells. Roger takes care of his role as a household air improver even more independently with his auto mode which adjusts the cleaning performance to what is currently needed. Roger sensitively provides clean and healthy air at home and in the office and lets allergy sufferers take a deep breath. The prefilter removes coarse dust particles and dirt from the air. This protects the following filter from heavy contamination and thus optimizes its functionality. At the heart of Roger, Stadler Form counts on its Dual Filter™, developed in cooperation with the German filter specialist Freudenberg. The filter material made in Germany guarantees the best cleaning results. The Dual Filter™ is a combination of a HEPA filter and an Activated Carbon filter. The HEPA filter removes pollutants out of the air, such as fine dust, pollen, viruses and bacteria. The Activated Carbon filter adsorbs gases present in the air (bad odours, tobacco smoke, formaldehyde, toluene, volatile organic compounds, etc.) and filters them out of the air. The capacity of the Dual Filter™ is limited, which means that it must be replaced every 8–12 months, depending on its exposure to air and gases. Thanks to the intelligent filter timer, Roger shows exactly when the filter needs to be replaced. • Room size: 74 m² • 521 m3/h CADR (Clean Air Delivery Rate) • Top choice for big and spacious rooms • Cleans the air 5 times an hour • Dual Filter Technology • HEPA and Activated Carbon Filter • Prefilter to optimize the efficiency of the Roger • Gas and particle sensor (PM 2.5) • Air quality indicator • Auto mode • Night mode • Filter change reminder • For allergy sufferers • 1–7 hour timer • Filter material made in Germany