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The NORDIC PURE 18x27x1CustomM12+C-6 is a custom-cut, pleated MERV 12 plus carbon air filter designed for residential and light commercial HVAC systems. The filter media uses electrostatically charged synthetic material combined with an activated carbon layer to capture airborne particulates and reduce common household odors in a single pass. Rated MERV 12, it captures over 90% of particles between 3 and 10 microns, and between 80% and 90% of particles in the 1 to 3 micron range. This 6-pack delivers a nominal size of 18x27x1 inches with an actual size of 17.5 x 26.5 x 0.75 inches. HVAC technicians and homeowners handling routine filter maintenance are the primary installers.
This filter is suited for residential forced-air furnaces and central air conditioning systems where a non-standard opening requires a custom-cut filter. The custom construction uses a reinforced 2-part frame, which may incorporate tape depending on final dimensions, providing structural integrity in tight filter housings. The carbon layer addresses light odor control alongside particulate filtration, making this configuration a common choice for households with pets, cooking odors, or light smoke exposure. Nordic Pure recommends changing this filter every 30 to 90 days depending on indoor air quality conditions and usage demands.
Custom-manufactured to a nominal 18x27x1 inch footprint for forced-air furnace and central AC filter housings requiring a non-standard size. Verify the actual opening dimensions before ordering, as custom sizes are not eligible for returns.
Power down or set the thermostat to off before removing the existing filter to prevent unfiltered air from circulating through the air handler. Confirm the actual filter slot dimensions with a tape measure prior to installation, as the actual filter size of 17.5 x 26.5 x 0.75 inches must seat within 1/8 inch of the housing opening. Install with the airflow direction arrow on the frame pointing toward the blower. Follow the filter manufacturer and HVAC equipment manufacturer recommendations for replacement intervals, typically every 30 to 90 days.
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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