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The NORDIC PURE 20x25x5LXREDPM8C-1 is a MERV 8 pleated plus carbon replacement air filter designed for residential forced-air heating and cooling systems. With a nominal size of 20x25x5 inches and an actual size of 19.75 x 24.75 x 4.375 inches, this filter combines a MERV 8 filtration layer fused to an activated carbon layer. The dual-material construction delivers 33% more surface area compared to standard pleated filters, reduces flow restriction, and captures airborne particulates while adsorbing odorous gases and volatile organic compounds (VOCs). It is installed by HVAC technicians or knowledgeable homeowners during routine filter replacement service.
This filter is engineered as a direct replacement for the Lennox X6673 and X6675 media air filters and fits systems that accept the 20x25x5 nominal size with an actual depth of 4.375 inches. It is suited for residential HVAC applications where both particulate capture and odor control are required, particularly in homes with pets or cooking odors. The filter media is hypoallergenic, antimicrobial, and electrostatic. The beverage board frame is moisture resistant, and a metal mesh support grid is bonded to the pleats for structural integrity throughout the filter life. One filter is included per box.
Designed as a direct replacement for Lennox X6673 and X6675 media air filters. Also fits systems from Honeywell, Carrier, and Bryant that accept a 20x25x5 nominal filter with an actual size of 19.75 x 24.75 x 4.375 inches. Always measure the existing filter or the filter housing before ordering to confirm the actual depth matches, as nominal and actual depths vary by manufacturer and housing design.
Filter replacement is typically performed by an HVAC technician or a qualified homeowner. Always shut down the air handler or furnace at the disconnect or thermostat before removing the old filter. Confirm airflow direction arrow on the filter frame aligns with system airflow before seating the new filter. Nordic Pure recommends replacing this filter every 3 to 6 months depending on indoor air quality 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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