A replaceable device designed to remove dust, pollen or other foreign matter from the air passing through it. The removal of particles is accomplished by porous, fibrous or shredded material (metallic or non-metallic) which is loosely woven or matted, the shape of which may be maintained by stiffening or binding material. It is designed to fit into a filter element, air conditioning or for direct application to air conditioners, ventilation systems, hot air furnaces, and electrical and electronic equipment which have retaining devices. It may be furnished in custom size form or in a continuous length. Excludes filtering pad, air cooler; and filtering roll, air conditioning. Excludes bulk materials not specifically designed for filtering. See also insulation blanket, thermal; plastic material, cellular; rubber sheet, cellular.
NSN 4140-00-826-9031
NSN 5996-01-186-9731
NSN 5855-01-571-6715
NSN 6620-01-112-6440
NSN 6685-01-519-6746
NSN 6320-01-052-2118
NSN 5999-01-425-8019
NSN 2925-00-225-5386
NSN 6320-01-311-6576
NSN 4140-01-161-7393
NSN 5985-01-270-7632
NSN 6650-00-809-1817