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The 3M COMPANY NADP00-2IN-4 is a Filtrete Allergen Defense air filter rated at 1000 MPR, designed for residential forced-air HVAC systems. Measuring 16 inches by 20 inches by 2 inches, it installs in standard return-air grilles and air handler filter slots. The 1000 MPR rating means this filter captures a significant portion of airborne allergen particles including pollen, mold spores, and dust mite debris while maintaining adequate airflow through the system. HVAC technicians and homeowners with basic system access handle routine replacement. Each unit ships as a single filter in a package quantity of four.
This filter is suited for residential gas, electric, and heat pump forced-air systems with a standard 16 by 20 by 2 inch filter slot. It is appropriate for single-family and light commercial applications where allergen reduction is a priority without stepping up to higher-restriction MERV or MPR ratings that could reduce airflow on lower-static systems. Typical install locations include wall-mounted return grilles, ceiling return grilles, and internal filter racks on air handlers.
Designed as an OEM-style replacement filter for residential and light commercial forced-air HVAC systems requiring a 16 by 20 by 2 inch filter size.
Filter replacement is performed by HVAC technicians or qualified building maintenance staff. Always set the system thermostat to the off position before opening the filter access panel or return grille. Insert the filter with the airflow arrow on the frame pointing toward the blower, away from the return air supply. Follow local codes and the equipment manufacturer's recommended filter change intervals, typically every 60 to 90 days for allergen-rated media in occupied residential settings.
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