The RHFH1315 is a combo of MERV8 pre-filter and carbon filters suitable for CM3000, CM3000i and DM3000P whole house ventilation systems.
The pre-filter will collect up to 90% particles between 3-10 microns in size such as pollen, dust, lint, dust mites, pet danger. The carbon filter will arrest household odors like cooking oil and smoke.
With normal usage, it is recommended that you change this filter every 3-6 months.
RHFH1315 includes 1 replacement MERV8 and 1 carbon filter.