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The NORDIC PURE 18x20x1M13-3 is a pleated MERV 13 air filter sold in a 3-pack, designed for residential and light commercial HVAC systems including forced-air furnaces and central air conditioners. The filter media is electrostatically charged and antimicrobial, capturing lint, household dust, pollen, pet dander, dust mites, mold spores, smoke particles, smog, virus carriers, and other airborne contaminants on each pass. The nominal size is 18x20x1 inches with an actual size of 17.5 x 19.5 x 0.75 inches. A moisture-resistant beverage board frame supports the pleated media and holds its shape under normal system airflow. MERV 13 performance is equivalent to the MPR 2200-2400 rating scale used by other manufacturers.
These filters are suited for residential forced-air furnaces and central AC systems where superior particulate filtration is required. They are a practical choice for households with pets, allergy sufferers, or occupants sensitive to airborne particulates. They also perform well in light commercial environments such as offices where indoor air quality is a priority. Recommended replacement interval is every 1 to 3 months depending on occupancy, pet presence, and local air conditions. During renovation or construction activity, more frequent changes are advised.
Designed as a nominal 18x20x1 replacement filter for residential and light commercial forced-air furnaces and central air conditioning systems that accept a standard 1-inch filter. Confirm the actual filter slot dimensions match 17.5 x 19.5 x 0.75 inches before installation.
Air filter replacement is a routine maintenance task performed by HVAC technicians and qualified building owners. Always shut off the HVAC system at the thermostat or disconnect before removing the existing filter. Note the airflow direction arrow printed on the filter frame and install with the arrow pointing toward the blower. Dispose of the used filter in a sealed bag to contain captured particulates.
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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