22 1/2 pores per linear inch
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 6320-00-313-9114
NSN 6620-01-389-9281
NSN 6145-01-430-3839
NSN 5895-01-066-9001
NSN 5925-01-067-7241
NSN 6145-01-073-1509
NSN 6105-00-394-6803
NSN 5960-01-399-4327
NSN 5999-01-414-6464
NSN 5945-00-813-3470
NSN 5985-01-152-6907
NSN 5930-01-011-6298