20x20x1 Pleated MERV 12 Air Filters Number Per Box:12 We recommend changing 1” and

We recommend changing 1” and 2” filters every 30-90 days

Actual Size: 15 1/2 x 19 1/2 x 3/4 (15

this is why we ask you to compare the exact dimensions

We recommend changing your HVAC furnace filter every 1-3 months

Actual Size: 11 1/2 x 17 1/2 x 3/4 (11

20x20x1 Pleated MERV 12 Air Filters Number Per Box:12 We recommend changing 1” andActual Size: 19 1 2 x 19 1 2 x 3 4 (19. 5 x 19. 5 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores and other contaminants. Ideal for high efficiency air filtration and will help those with moderate allergies and asthma. Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12 is equivalent to MPR 1500 1900 Made in the USA. Nordic Pure