A light, rigid item composed of one or more kinds of granule and/or fiber with binder added, compressed to the desired density, and dried. It may be with or without surface coating and/or perforations or voids to be exposed to the noise area to entrap and dissipate sound energy, and is rated for this use. It is provided in lengths greater than 36 inches (914.4 mm).
Classification: Mixtures and articles of heat-insulating sound-absorbing mineral materials, nesoi
NSN 6610-01-232-4802
NSN 5985-00-251-1453
NSN 4140-01-023-1537
NSN 2925-01-253-6006
NSN 2925-01-381-5307
NSN 4140-01-231-5031
NSN 5985-01-395-2914
NSN 5905-01-363-1730
NSN 5930-00-193-7349
NSN 6645-01-425-2330
NSN 2925-01-462-1620
NSN 5895-01-491-5091