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 2925-01-519-3221
NSN 5998-00-762-5925
NSN 5925-01-374-1489
NSN 5920-01-265-6959
NSN 2925-01-327-3069
NSN 6240-01-037-2215
NSN 5915-01-611-3097
NSN 6645-01-383-0106
NSN 6130-01-441-2241
NSN 5945-00-006-3533
NSN 5935-00-945-9824
NSN 6610-01-223-3761