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 2925-00-535-0372
NSN 5925-01-426-1791
NSN 5910-01-365-4301
NSN 6220-00-006-9746
NSN 5950-00-936-5032
NSN 6220-01-198-5630
NSN 5925-01-084-3165
NSN 5945-01-238-2184
NSN 5895-00-941-0866
NSN 6150-00-106-8747
NSN 5925-00-929-1719
NSN 7035-01-048-2813