Consists of a rigid, box shaped outer panel, sound controlling batt, sound controlling board and/or sound controlling block. 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.
NSN 5985-01-444-3769
NSN 6320-00-228-5678
NSN 6240-00-156-1607
NSN 6650-00-078-5773
NSN 7035-00-104-7613
NSN 5855-01-558-5844
NSN 6145-01-611-6232
NSN 5835-01-457-7951
NSN 5935-00-964-7209
NSN 6130-01-055-9980
NSN 6650-00-470-3905
NSN 6145-01-120-5623