Best Air, 20" x 25" x 4" Air Cleaning Furnace Filter, MERV 11, Carbon

Our specialized filtration media has the most effective combination of particle capture rate, with minimum pressure drop, ensuring the best overall performance of your HVAC system and particle capture rate to clean the air. Electrostatically charged media for enhanced particle ...Our specialized filtration media has the most effective combination of particle capture rate, with minimum pressure drop, ensuring the best overall performance of your HVAC system and particle capture rate to clean the air. Electrostatically charged media for enhanced particle capture effectiveness.

This media has special emphasis on particulate size that captures most airborne allergens and it makes it one of the most advanced furnace filters (air filters) on the market today.