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 2925-01-172-0176
NSN 5975-01-094-6943
NSN 5905-01-575-5876
NSN 5930-00-961-9920
NSN 5930-00-881-1364
NSN 5985-01-208-5694
NSN 7035-01-217-7474
NSN 6135-01-650-4313
NSN 6620-01-047-5831
NSN 5985-01-552-9081
NSN 5999-00-954-5138
NSN 6150-01-381-6293