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 2925-01-267-1598
NSN 5930-01-240-2309
NSN 5945-01-258-4999
NSN 6220-00-080-2352
NSN 6620-01-197-0386
NSN 5999-00-469-9978
NSN 7035-01-210-0493
NSN 6220-01-081-4784
NSN 4140-01-459-7411
NSN 5998-01-399-0615
NSN 5965-00-866-3371
NSN 2925-01-016-0876