National Stock Number:
5640-99-151-9079
Federal Supply Class:
5640
National Item Identification Number:
991519079
Description:
SOUND CONTROLLING B
Detail:
A material composed of one or more kinds of fiber, with or without binder added, reinforced on one or both sides with various confining media suitably bound thereto. It is designed to entrap and dissipate sound energy, and must be rated for this use.
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