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 4140-01-542-3749
NSN 5835-01-173-8003
NSN 5905-01-428-9660
NSN 6220-01-495-3301
NSN 6620-01-158-3125
NSN 6685-00-141-4300
NSN 2925-01-541-5031
NSN 7035-01-615-3634
NSN 6240-01-447-3779
NSN 7035-00-703-3535
NSN 5920-01-139-5973
NSN 6135-01-050-3194