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 5950-00-506-2255
NSN 6220-01-111-9730
NSN 6320-01-449-1014
NSN 6145-01-153-7197
NSN 5950-01-532-4481
NSN 6110-01-116-3397
NSN 6645-00-955-7997
NSN 5998-01-310-9205
NSN 6645-00-920-8690
NSN 5925-01-599-9561
NSN 6145-01-559-1494
NSN 6650-01-410-8542