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 6145-01-420-6723
NSN 6650-01-428-6799
NSN 5999-01-161-3129
NSN 6240-00-696-0249
NSN 5895-01-391-7401
NSN 5965-01-342-2865
NSN 5920-00-819-0099
NSN 5835-01-383-1313
NSN 5925-00-563-5720
NSN 5990-00-522-3425
NSN 5835-01-009-2417
NSN 6150-00-147-3680