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 5925-01-516-7002
NSN 5855-00-791-5000
NSN 6110-00-376-4834
NSN 6220-01-600-0257
NSN 5910-00-594-7986
NSN 5985-00-734-7479
NSN 6145-01-346-2247
NSN 6645-00-285-8781
NSN 6610-01-415-5877
NSN 6610-01-620-2303
NSN 5990-00-155-2306
NSN 5950-01-286-9935