The NaturalAire MERV 13 is in the top tier of filters for contaminant removal in residential retail air filters. National Air Filtration Users Guide for ASHRAE Standard 52.2-2007 shows MERV 13 filters are the appropriate application in general surgery, hospitals and health care facilities. Now you can have a MERV 13 quality air filter in your home.
May cause Cancer and/or Reproductive Harm - www.P65Warnings.ca.gov