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The NORDIC PURE 20x21x1ExactCustomM12+C-6 is a custom-cut, MERV 12 pleated AC furnace filter with integrated carbon media, sized to exact dimensions of 20 x 21 x 0.75 inches. It uses electrostatically charged synthetic filter media to capture airborne particulates across a wide size range, including particles between 1 and 10 microns. The carbon layer addresses odor-causing compounds that standard pleated filters do not trap. HVAC technicians and service professionals install this filter in residential and light-commercial forced-air systems where a non-standard slot dimension requires a custom-fabricated unit. This SKU ships as a 6-pack.
This filter fits air handlers, furnaces, and central AC systems with a filter slot that measures 20 x 21 x 0.75 inches actual. Because the slot does not match any standard nominal size, a custom-cut unit is required. The reinforced 2-part frame construction - which may include taped joints depending on final cut dimensions - maintains structural integrity under normal static pressure from residential forced-air equipment. Installations in environments with elevated particulate loads such as pet dander, cooking flour, mold spores, or light smoke benefit from the combined MERV 12 and carbon media stack. The filter is manufactured in the USA.
Designed for residential and light-commercial forced-air furnace and AC systems with a filter slot requiring an exact actual size of 20 x 21 x 0.75 inches. Custom-made to these specific dimensions; verify the actual slot measurement before ordering, as this product is non-returnable.
HVAC technicians and qualified service professionals should power down the air handler or furnace at the disconnect or breaker before replacing the filter. Verify the actual filter slot dimensions with a tape measure prior to installation - the nominal listed size does not reflect the true slot opening. Confirm airflow direction and orient the filter so the direction arrow on the frame aligns with the air movement toward the blower. Nordic Pure recommends replacing this filter every 30 to 90 days depending on environmental conditions and system runtime.
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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