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 5998-01-171-4363
NSN 4140-01-442-5155
NSN 6145-01-428-9932
NSN 7035-01-408-8698
NSN 5910-01-028-3541
NSN 5945-00-161-4014
NSN 5930-00-216-7511
NSN 5910-01-649-3398
NSN 6220-01-260-2407
NSN 5915-01-438-6668
NSN 5975-01-505-5396
NSN 5930-01-323-3625