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National Stock Number:
5640-00-527-8780
Federal Supply Class:
5640
National Item Identification Number:
005278780
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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Techincal Specification:
| BASIC MATERIAL | FIBER, VEGETABLE | | COLOR | WHITE | | COVERAGE LENGTH | 12.000 INCHES NOMINAL | | COVERAGE WIDTH | 12.000 INCHES NOMINAL | | EXPOSED FACE SURFACE TYPE | PERFORATED | | FLAMEPROOF FEATURE | INCLUDED | | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 4 GRADE AND 25 CLASS AND A PATTERN | | OVERALL LENGTH | 12.000 INCHES NOMINAL | | OVERALL THICKNESS | 0.625 INCHES NOMINAL | | OVERALL WIDTH | 12.000 INCHES NOMINAL | | JOINT STYLE | BEVELED BUTT JOINT | | NOISE REDUCTION COEFFICIENT RATING | 0.60 NOMINAL |
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