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 5985-01-340-4533
NSN 6145-00-495-7391
NSN 6610-00-530-3955
NSN 5920-01-120-0994
NSN 5998-01-145-1048
NSN 7035-00-205-1932
NSN 5855-00-401-3442
NSN 4140-00-202-7649
NSN 6620-01-649-0748
NSN 6240-01-274-2154
NSN 5965-01-508-7025
NSN 5996-01-645-9422