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 5935-01-381-6560
NSN 6135-01-355-8917
NSN 5945-00-410-4171
NSN 6610-00-006-5783
NSN 5925-01-387-9630
NSN 5999-01-656-8739
NSN 6650-00-754-2276
NSN 5950-00-058-8614
NSN 5960-00-487-7199
NSN 6150-01-432-2376
NSN 5996-01-118-5320
NSN 4140-01-409-1502