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The NORDIC PURE 21_1/2x23x1ExactCustomM12-6 is a custom-cut, pleated AC furnace air filter rated MERV 12, sized to an actual dimension of 21.5 x 23 x 0.75 inches. It ships in a pack of six and is hand-fabricated to the exact dimensions specified at order time using a heavy-duty, moisture-resistant beverage board frame. The filter media is electrostatically charged to attract airborne particles and will not promote bacterial or mold growth on the filter surface. MERV 12 performance is equivalent to MPR 1500-1900 ratings used by other manufacturers, and this rating is defined by ASHRAE standards. Licensed HVAC technicians and knowledgeable DIYers install this filter in residential and light-commercial air handling systems.
This filter is suited for residential homes and light-commercial office environments where occupants have elevated sensitivity to airborne contaminants such as pet dander, pollen, mold spores, smoke particles, bacteria, and virus carriers. Because this is a custom size, it is produced by cutting down or combining standard filter frames, and tape may be used in construction to achieve the specified dimensions. The filter is manufactured in the USA. Recommended replacement interval is every one to three months, with more frequent changes advised for households with pets or allergy sufferers.
Designed as a custom exact-fit replacement for AC furnace air handler systems requiring a filter with an actual size of 21.5 x 23 x 0.75 inches. Verify the actual opening dimensions of your air handler or return-air grille with a tape measure before ordering. This is a non-returnable custom item.
Installation is performed by a licensed HVAC technician or qualified DIYer. Power down the air handling unit at the thermostat and disconnect power at the breaker before servicing the filter compartment. Confirm airflow direction arrows on the filter frame align with the direction of airflow toward the blower. Because this is a custom-fabricated size, measure the actual filter slot dimensions carefully before ordering, as custom sizes cannot be returned or exchanged.
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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