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 5990-01-133-0351
NSN 6650-01-575-1044
NSN 5910-01-290-2968
NSN 6320-01-064-0372
NSN 5999-00-661-0954
NSN 4140-00-012-3506
NSN 6105-01-126-4462
NSN 5985-01-655-3206
NSN 5945-01-350-5662
NSN 5998-01-381-2986
NSN 6650-00-401-1496
NSN 5950-00-221-2962