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 6620-00-290-6505
NSN 6620-00-451-1460
NSN 5990-01-326-2677
NSN 5975-00-840-0045
NSN 5925-01-073-9736
NSN 6685-01-128-5972
NSN 5905-01-429-5188
NSN 7035-01-037-7400
NSN 6130-01-167-8911
NSN 5985-01-607-6554
NSN 5999-00-111-2399
NSN 5910-01-335-3452