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 4140-01-198-1452
NSN 5985-00-439-3717
NSN 6135-01-141-4916
NSN 5975-01-368-0689
NSN 5975-01-478-3514
NSN 6110-01-400-4207
NSN 5920-00-061-8623
NSN 5905-00-910-9486
NSN 6135-01-062-5420
NSN 5985-01-440-9976
NSN 6130-01-240-1178
NSN 5935-01-488-7880