21x23 1/2x1 MERV 14 AC Furnace Filters Number Per Box:6 The Actual Size listed above

The Actual Size listed above is the exact size of the metal frame

Captures large airborne particles like household dust

Nordic Pure 15x20x2 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home

household dust

which is 9-gauge wire grid with a support that runs through the middle for added strength and stability

21x23 1/2x1 MERV 14 AC Furnace Filters Number Per Box:6 The Actual Size listed aboveActual Size: 20 x 23 1 8 x 3 4 (20 x 23. 13 x 0. 75) Airborne dust, pollen, mold spores, pet dander, smog, dust mite debris, smoke, and bacteria are captured and removed. Ideal for customers with health problems or for commercial units which support a rating of MERV 14 and above Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 14 is equivalent to MPR 2800 Made in the USA. Nordic Pure MERV 14