The Abatement Technologies F2221 replacement pre-filter filter is for the following Abatement portable air scrubbers:
The actual size of the Abatement Technologies F2221 air filter is approximately 16 x 16 x 2. The fiber trap pre-filter is designed to capture the coarsest particles circulating through your air duct system which helps to extend the life of the 2nd stage carbon-pleated filter and the HEPA filter, saving you money!
High Particulate - every 8 hours
Medium Particulate - every 48 hours
Low particulate - every 72 hours or until filter light goes on
This package ships with 12 filters.