21x23 1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters Number Per Box:6 MERV 12 Plus Carbon air

MERV 12 Plus Carbon air filters are comparable to air filters with the MPR rating of 1500-1900

Replaces Honeywell 16x25x4 and filters with an MPR rating with an actual depth of 4 3/8 and ideal for high air filtration and odor control

Replaces Honeywell 20x20x4 and filters with an MPR rating with an actual depth of 4 3/8 and ideal for superior filtration and odor control

Actual Size: 21 1/2 x 23 3/8 x 3/4 (21

Nordic Pure 20x25x4 Plus Carbon Air Filters MERV 14 are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home

21x23 1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters Number Per Box:6 MERV 12 Plus Carbon airActual Size: 21 x 23 1 4 x 3 4 (21 x 23. 25 x 0. 75) Captures large airborne particles like lint, household dust, pollen, dust mites, mold spores and other contaminants. This dust reduction air filter is ideal in keeping your AC and furnace equipment working efficiently and helps reduce odors Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 7 is equivalent to MPR 600 Made in the USA. Nordic Pure