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 2925-01-497-9381
NSN 5855-01-222-1242
NSN 6320-00-313-9114
NSN 5996-00-193-0585
NSN 6105-01-660-3411
NSN 5998-00-525-2654
NSN 5965-00-170-5254
NSN 6240-01-237-7454
NSN 5998-01-226-9042
NSN 6240-01-492-6529
NSN 6220-00-451-8161
NSN 5855-00-100-9003