National Stock Number:
5640-01-107-4940
Federal Supply Class:
5640
National Item Identification Number:
011074940
Description:
SOUND CONTROLLING BLOCK
Detail:
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).
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