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 5960-01-543-0235
NSN 5975-00-755-3328
NSN 5975-00-027-8298
NSN 5855-01-058-6687
NSN 6150-01-532-9271
NSN 6110-01-274-7774
NSN 5985-01-127-6844
NSN 5985-01-212-4421
NSN 4140-00-289-9263
NSN 6150-00-466-2365
NSN 7035-01-226-8894
NSN 6240-00-079-1759