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 6240-00-422-1278
NSN 5999-01-261-9138
NSN 4140-00-118-6169
NSN 5996-01-530-0823
NSN 5990-01-164-0220
NSN 5960-00-836-6504
NSN 2925-01-476-3224
NSN 5975-01-092-2111
NSN 5855-01-440-8978
NSN 6610-00-419-3154
NSN 5965-00-482-7945
NSN 6135-01-122-4448