APOLLO Central ERV Primary MERV 13 Filters — Pack of 2APOLLO Central ERV Primary MERV 13 Filters Pack of 2 Replacement primary air filters designed for the APOLLO Central ERV. These filters help capture airborne particles before they reach the internal components of the unit, supporting cleaner airflow and regular ERV maintenance. Key Benefits Designed for the APOLLO Central ERV Helps protect the internal components of the ventilator Supports clean airflow and consistent system performance Ideal for