MERV-13 Filter (14 x 17.5 x 1.75) - 4037722

Every whole house ventilating dehumidifier ships with a MERV 13 filter for a reason: it pulls out the fine stuff, including microscopic allergens, bacteria, smoke, and PM2.5. Keep it clean with a regular vacuuming, then replace it every 6 months to maintain airflow and filtration.