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 6145-01-421-4257
NSN 6110-00-215-8585
NSN 5910-01-241-2668
NSN 6220-00-501-2867
NSN 5985-01-153-2657
NSN 5990-01-344-6176
NSN 5855-01-330-3669
NSN 5915-00-167-0306
NSN 5925-01-458-3328
NSN 6145-00-222-1356
NSN 7035-01-183-7550
NSN 6135-01-656-0761