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The NORDIC PURE 17_1/2x21x1ExactCustomM10+C-6 is a custom-cut, pleated MERV 10 plus carbon air filter supplied in a pack of six. It is built to exact dimensions - actual size 17.5 inches by 21 inches by 0.75 inches - making it suitable for HVAC systems that do not accept standard nominal filter sizes. The carbon layer addresses common household odors while the MERV 10 media captures over 85 percent of airborne particles between 3 and 10 microns, including dust, pollen, pet dander, mold spores, and lint. Licensed HVAC technicians and experienced HVAC service professionals typically specify this filter for residential and light-commercial forced-air furnace and air conditioning systems.
This filter is used in residential and light-commercial forced-air systems where a non-standard opening requires a custom-dimensioned filter. It fits applications where the rough opening measures 17.5 inches by 21 inches by 0.75 inches actual. Because it is hand-cut to order, it is intended for system openings that fall outside the range of catalog nominal sizes. It is appropriate for gas furnaces, electric air handlers, and split-system air conditioning units that share a common return-air filter rack with that opening dimension.
Designed as a custom exact-size replacement filter for residential and light-commercial forced-air furnace and air conditioning systems with a filter rack that accepts a 17.5-inch by 21-inch by 0.75-inch actual-dimension filter. Verify physical measurements of the existing filter before ordering, as custom sizes are manufactured to the dimensions specified at the time of order.
Filter installation is performed by HVAC technicians or qualified service personnel. Power down the air handler or furnace at the disconnect or thermostat before removing the existing filter. Confirm airflow direction arrow on the filter frame aligns with the direction of airflow toward the blower before seating. Because this is a custom-cut exact-size filter, do not attempt to trim or modify the filter frame on-site; order a corrected size if dimensions do not match the rack opening.
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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