aprilaire 501 replacement filter for aprilaire whole house electronic air purifier model: 5000, merv 16 (pack of 4)

BUY WITH CONFIDENCE This genuine AprilAire 501 replacement air filter was designed and manufactured in the USA by AprilAire the leader in indoor air quality solutions to optimize the performance of your AprilAire Electronic Air Purifier Model: 5000,CAPTURES UP TO 90% OF VIRUS-SIZE airborne particles passing through the AprilAire Electronic Air Purifier 5000's filter, including airborne particulates associated with tobacco smoke and pollution,TRAPS UP TO 98% OF AIRBORNE ALLERGY AND ASTHMA TRIGGERS as the air in your home circulates through the filter, including dust, pollen, mold spores, bacteria, pet dander, and dust mites,EFFICIENT HOME AND HVAC SYSTEM PROTECTION - replace your filter annually for optimal performance - up to one year of filter life saves you time and effort,NOMINAL AIR FILTER SIZE of 16 x 25 x 6 inches (nominal size is an industry standard filter size system to help you easily identify the correct replacement filter and is not the actual size)