Aprilaire 35 Humidifier Filter. Genuine OEM Aprilaire #35 humidifier filter for your Aprilaire whole house humidifier. The approximate size of this filter is 12.75 x 9.75 x 1.75. This item must be replaced at least once per year for optimal performance. Fits Aprilaire model 350, 360, 560, 568, 600, 700, 760, 768 humidifiers.

This item is sometimes called a water panel, media filter, evaporator pad or humidifier pad. The manufacturer is sometimes referred to as April Aire, Aprilair, April Air but is correctly spelled Aprilaire.