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The NORDIC PURE 20x21_1/2x1ExactCustomM14-6 is a custom-cut, MERV 14 pleated air filter designed for AC and forced-air furnace systems in both residential and commercial HVAC applications. With an actual size of 20 x 21.5 x 0.75 inches, this filter is hand-fabricated to exact dimensions using a moisture-resistant beverage board frame and electrostatically charged filter media. At MERV 14, it captures over 90 percent of airborne particles between 1 and 10 microns, and 75 to 95 percent of particles between 0.3 and 1 microns. This pack includes 6 filters. Installation is performed by licensed HVAC technicians or qualified mechanical contractors.
This filter is suited for residential and light commercial HVAC systems rated to handle MERV 14 filtration and above, including newer high-efficiency systems that typically use HEPA-grade media. It is particularly effective in environments where occupants have allergies, asthma, or sensitivity to airborne contaminants such as smoke, pet dander, mold spores, bacteria, and virus carriers. Filter replacement every 1 to 3 months is recommended, with more frequent changes in homes with pets or allergy sufferers. Because this is a custom-made product built to the exact nominal size of 20x21_1/2x1, it is non-returnable. Verify the actual dimensions of your existing filter before ordering.
Designed for HVAC systems rated to accept MERV 14 or higher filtration media, including high-efficiency residential and light commercial forced-air furnace and AC systems. Verify your system documentation confirms MERV 14 compatibility before installation, as high-MERV filters can restrict airflow in systems not engineered for them.
Power down the HVAC system at the thermostat and disconnect power at the air handler before replacing the filter. Confirm airflow direction arrows on the filter frame align with system airflow before seating the filter. Because this is a custom-cut product, measure the actual opening in your filter housing - not the nominal size printed on your old filter - to confirm dimensional fit. HVAC filter replacement falls within standard mechanical maintenance and does not typically require permits, but verify local codes if the work is part of a larger system service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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