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 5920-00-413-1338
NSN 5990-00-170-4239
NSN 5960-01-632-6576
NSN 7035-00-117-0418
NSN 5915-01-135-5677
NSN 5990-01-160-6978
NSN 6145-00-765-6736
NSN 6620-01-297-5576
NSN 5950-01-361-9862
NSN 2925-01-535-7235
NSN 6150-01-202-9251
NSN 5910-01-517-1237