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 up to and including 36 inches (914.4 mm).
Classification: Mixtures and articles of heat-insulating sound-absorbing mineral materials, nesoi
NSN 6650-01-575-6721
NSN 5996-01-015-4142
NSN 5945-01-085-7031
NSN 4140-01-605-1706
NSN 5835-00-794-7500
NSN 6220-01-430-4268
NSN 5996-01-126-2156
NSN 5925-00-244-7418
NSN 6610-00-834-0713
NSN 5950-00-070-4704
NSN 5935-01-042-4479
NSN 6645-01-417-4332