16x21x1 MERV 12 Plus Carbon AC Furnace Filters Number Per Box:12 While different companies use different

While different companies use different scales to measure the air filter’s efficiency

Important Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter

Replaces Honeywell 16x20x4 and filters with an MPR rating with an actual depth of 4 3/8 and ideal for superior filtration and odor control

Actual Size: 9 1/2 x 15 1/2 x 3/4 (9

75 x 19 x 0

16x21x1 MERV 12 Plus Carbon AC Furnace Filters Number Per Box:12 While different companies use differentActual Size: 15 1 2 x 20 1 2 x 3 4 (15. 5 x 20. 5 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, help eliminate unwanted odors and other contaminants. Ideal for customers who not only need odor control but whose daily life demands high filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12 is equivalent to MPR 1500