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 5920-01-494-9401
NSN 6220-01-171-4738
NSN 5905-01-348-7084
NSN 5996-01-299-5588
NSN 5920-01-634-0250
NSN 5960-00-243-9155
NSN 5990-01-449-7042
NSN 4140-01-123-8801
NSN 5905-01-254-3740
NSN 2925-00-997-1792
NSN 5950-00-156-2220
NSN 5910-01-039-3580