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The 3M COMPANY NDP00-4IN-2 is a Filtrete high-capture air filter rated at 1550 MPR (Microparticle Performance Rating), designed to trap airborne allergens, bacteria, and viruses in forced-air HVAC systems. Each filter measures 16 inches x 20 inches x 4 inches, making it suited for applications requiring a deep-media filter with extended surface area. The 4-inch depth allows for longer service intervals compared to standard 1-inch filters while maintaining airflow performance. This SKU ships as a 2-pack. Installation is performed by HVAC technicians or knowledgeable homeowners during routine filter maintenance.
This filter is intended for use in residential and light commercial forced-air heating and cooling systems equipped with 16 x 20 x 4 inch filter housings or media cabinets. It is particularly applicable in environments where occupant health concerns warrant high-efficiency particle capture, such as homes with allergy or asthma sensitivities. The 1550 MPR rating places it in the upper tier of consumer-grade pleated media filters, capable of capturing fine particles including smoke, pet dander, dust mite debris, and select airborne pathogens.
Designed as a replacement filter for residential and light commercial forced-air HVAC systems using a 16 x 20 x 4 inch filter slot or dedicated media cabinet enclosure.
Filter installation and replacement should be performed by a licensed HVAC technician or a qualified service professional. Always shut down the air handler or furnace at the system disconnect before removing or inserting a filter. Verify airflow direction arrow on the filter frame aligns with the direction of airflow toward the blower. Do not operate the system without a filter installed, as unfiltered air can damage coils and blower components.
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