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 5920-01-411-5512
NSN 5935-00-244-0935
NSN 6620-00-165-5873
NSN 5855-01-519-3814
NSN 4140-01-130-1456
NSN 5975-00-781-3065
NSN 5990-00-055-1956
NSN 5965-01-073-1014
NSN 6320-01-564-0893
NSN 5998-01-409-2874
NSN 4140-01-231-9419
NSN 5998-01-043-6605