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 6150-01-152-2650
NSN 6645-01-111-3758
NSN 5945-00-089-9130
NSN 5930-01-188-7378
NSN 5920-01-512-0047
NSN 5905-01-035-6135
NSN 6220-00-225-3780
NSN 6240-01-133-8461
NSN 5930-01-601-0042
NSN 4140-01-407-6595
NSN 4140-01-583-9725
NSN 5835-01-628-1748