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 6320-01-328-6575
NSN 5925-01-653-5612
NSN 6110-00-153-5395
NSN 6620-01-158-9412
NSN 5999-01-634-0576
NSN 5910-01-139-6090
NSN 6240-00-713-0237
NSN 5985-01-447-4084
NSN 5920-01-576-9869
NSN 5935-01-407-6025
NSN 4140-01-181-9669
NSN 6130-01-069-2033