Nordic Pure Air Filters 2 Pack

Please note that the actual size of most furnace filters differs from the nominal size printed on the filter. It is recommended that you measure your air filter for the exact size and compare it to our "Actual Size" for best fit. For 4" and 5" air filters, there may be a wider variance between the nominal and actual size depending on the manufacturer. Specifically, if you are swapping out a 4 3/8 depth 20x20x4 filter in your Honeywell unit, you should order our 20x20x5 Honeywell Replacement air filter, which measures 19 5/8 x 19 7/8 x 4 3/8 (19.63x19.88x4.38).

Nordic Pure 20x20x4 Pleated Air Filters MERV 12 are constructed from electrostatically charged synthetic materials that attract and capture most airborne particles in your home. These air filters are manufactured using a heavy-duty, moisture-resistant beverage board frame, with a metal mesh support grid bonded to the pleats for extra support. MERV 12 furnace air filters are comparable to HVAC filters with a MPR rating of 1500-1900. By ensuring the efficiency of your air conditioning and heating systems, these high-performance HVAC replacement filters can help save you money on utilities and costly maintenance.

To maintain fresh, clean air in your home or office, it is important to regularly change your furnace air filters, especially during any home improvements. It is recommended to change your air filter every 3-6 months to maintain maximum efficiency and economy.

Nordic Pure 20x25x4 MERV 12 Pleated AC Furnace Air Filters have an actual size of 9 1/2 x 19 1/2 x 3 5/8 (19.5 x 19.5 x 3.63). It is crucial to note that almost all filters are slightly smaller than the nominal size printed on the filter, hence measuring your filter for the exact size and comparing it to the "Actual Size" listed is highly recommended. For 4-Inch and 5-Inch filters, there are various exact sizes for different HVAC manufacturers. Therefore, your filter may indicate 20x25x4 but actually be the same as our 20x25x5, so measuring your filter is essential to avoid surprise if the filter does not fit. You should also consider our Honeywell replacement 20x25x5 filter and check the "Actual Size" before ordering.

Changing your air filter is the first step in ensuring that your HVAC system operates at its optimal level. As a general rule, 4-Inch air filters should be changed every 3 to 6 months. A MERV 12 Nordic Pure air filter can capture airborne particles as small as 0.3 microns, making it an effective barrier against allergy-causing pollen, fine dust, smoke particles, airborne plant spores, bacteria, and some viruses. Made of electrostatically charged synthetic material, Nordic Pure air filters draw airborne particulates like a magnet and do not permit the growth of bacteria or mold. Therefore, it is not necessary to add potentially irritating chemicals to the filter to kill germs.

Nominal Size: 20 x 20 x 4, Actual Size: 19 1/2 x 19 1/2 x 3 5/8 (19.5 x 19.5 x 3.63) Remember to measure your air filter for the exact size and compare it to our actual size for proper fit. If you are replacing a Honeywell or Lennox 20x20x4 or an air filter with an MPR rating with an actual depth of 4 3/8, please see our 20x20x5 (4 3/8 actual depth). Nordic Pure MERV 12 is equivalent to MPR 1500-1900. Made in the USA.

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