The ComfoAir 350/550 F7 Filter is a MERV 13.
- The filter replacements are for both the ComfoAir 350/550 ERV and HRV Ventilation Device
- It is recommended to order the filters in quantities of two so both filters in the units are replaced at the same time to ensure optimal indoor air quality in the home.
Additonal models of the ComfoAir 350/550 Filters Include:
- #9240-ComfoAir 350/550 G4 Filter- MERV 7/8