AHAM VERIFIDE INDEPENDENTLY TESTED. CONSUMER TRUSTED. AIR CLEANER SUGGESTED CLOSED ROOM SIZE SQUARE FEET CLEAN AIR DELIVERY RATE & ENERGY TESTED THE HIGHER THE CADR NUMBERS, THE FASTER THE UNITS CLEAN THE AIR TOBACCO SMOKE DUST POLLEN PORTABLE AIR CLEANERS ARE MOST EFFECTIVE IN ROOMS WHERE ALL DOORS AND WINDOWS ARE CLOSED. WWW.AHAMVERIFIDE.ORG