Flanders Precisionaire 20x25x5 Filters MERV 11 (2 pack)
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These filters are made with a blend of polypropylene and polyethylene electrostatic filtration media which is adhered to an expanded metal backing. This combination is deep pleated and encased in a moisture resistant kraft board frame and offers a MERV 8 rating. Installation: Air Bear replacement filter cartridges are designed for use with the Trion Air Bear air cleaner housings. Simply install in place of the Trion cartridge. No alterations or equipment are required.