Filter-Monster 1" Pleated HVAC Air Conditioner Furnace Replacement Air Filter MERV 11 / MERV 13 Options, 4 Pack

Filter Monster MERV 11 and MERV 13 HVAC filters protect against common airborne contaminants, capturing up to 85% and 90% of particles respectively, suitable for improving indoor air quality.

• The MERV 11 HVAC filters capture up to 85% of particles sized .3 to 10 microns.
• The MERV 13 HVAC filters capture up to 90% of particles sized .3 to 10 microns.