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 6240-01-231-0452
NSN 6145-00-056-2046
NSN 5930-01-476-7248
NSN 5895-00-900-8511
NSN 5965-01-121-6135
NSN 5915-00-337-6698
NSN 2925-01-164-9579
NSN 6240-01-595-3594
NSN 5950-01-294-1465
NSN 6620-01-018-9488
NSN 5855-00-145-3307
NSN 5996-00-915-1385