20x28x1 Exact MERV 13 AC Furnace Filters 14x36x1 Replaced approximately every 30 to

Replaced approximately every 30 to 60 days for fresh clean air

Actual Size: 15 1/2 x 23 1/2 x 1/2 (15

Nordic Pure 18x18x2 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

as developed by ASHRAE (the American Society of Heating

Nordic Pure 14x14x1 MERV 8 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

20x28x1 Exact MERV 13 AC Furnace Filters 14x36x1 Replaced approximately every 30 toActual Size: 20 x 28 x 3 4 (20 x 28 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, smog and other contaminants. Ideal for customers looking for superior filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 13 is equivalent to MPR 2200 2400 Made in the USA. Nordic Pure MERV 13 Pleated AC Furnace Air Filters provide