19x21x1 MERV 7 AC Furnace Filters Number Per Box:6 Each Nordic Pure 4” MERV

Each Nordic Pure 4” MERV 13 air filter will capture more than 90% of 1

With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer

With each pass through the carbon furnace air filter

Nordic Pure 16x16x2 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

Nordic Pure 16x20x5 Honeywell Replacement MERV 14 rated air filters are what is considered the traditional 5” filter at an actual 4 3/8”

19x21x1 MERV 7 AC Furnace Filters Number Per Box:6 Each Nordic Pure 4” MERVActual Size: 18 1 2 x 20 1 2 x 3 4 (18. 5 x 20. 5 x 0. 75) Merv 7 pleated air filter captures large airborne particles like household dust, mold spores, and pollen. This dust reduction air filter is ideal in keeping your AC and furnace equipment working efficiently Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 7 is equivalent to MPR 600 Made in the USA. Nordic Pure MERV 7 Pleated AC Furnace