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 5996-00-332-2438
NSN 5998-01-164-6833
NSN 5965-01-594-9290
NSN 6110-01-294-8951
NSN 4140-01-026-2725
NSN 5990-00-201-1162
NSN 6645-01-103-0901
NSN 6110-01-487-1263
NSN 5985-00-763-7326
NSN 6240-00-470-7625
NSN 6240-00-250-8693
NSN 6130-00-153-3136