20 x 20 x 4 Pleated Air Filter FPR 10, MERV 12

Today’s tightly built homes trap dust, allergens and more, which explains why indoor air quality ranks among the top five environmental risks to public health. This Honeywell Home 20 in. x 20 in. x 4 in. Pleated FPR 10 Air Filter captures a high percentage of household air particles, including those which are most harmful to your lungs. The filter will protect against bacteria, dust, mold, pollen, smoke and viruses for up to 12 months.