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 6650-01-633-1974
NSN 5910-00-502-7031
NSN 5920-00-196-3631
NSN 5998-01-243-0420
NSN 5985-01-428-9964
NSN 6610-00-911-2581
NSN 5945-01-319-5684
NSN 6320-01-388-1067
NSN 5996-01-411-0497
NSN 6610-01-282-9953
NSN 6685-01-554-4337
NSN 5855-00-281-3843