Fantech HERO Air Exchanger Filter Kit 428549 MERV 13 (2-PACK) 

• For a superior air quality upgrade from the original MERV3 or MERV8 filters, consider the MERV13 replacement filters.
• This replacement filter kit features 2 pleated air filters with a MERV13 rating. Suitable for HERO 200H and HERO 250H Fresh Air Appliances.
• The filters will collect particles such as mold spores, pollen, pet dander, smog, bacteria, cement dust, carpet fibers, debris, and lint. With normal usage, it is recommended to replace the filter every 3 months.

NOTE: Upgrading to a more efficient filter will affect the airflow capability of your appliance.

NOTE: Filter sizes posted are the nominal sizes for the filter racks. The actual sizes are slightly less than the nominal sizes posted. We recommend measuring both sizes for your filter rack opening as well as the actual filters you need, before placing your order online.