Acouseal
expansion joint
Charts

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Sound Reducion Index of Acouseal, ref no. 260 2 4004 DTI

1/1 octave center
frequency (HZ)		 R
(from table 1)
31 33.6
63 30
125 48
250 30.6
500 18.4
1,000 28
2,000 35.7
4,000 37.1
8,000 43.5
31.5-8,000