Noise Barriers, LLC. Providing the Sound of Silence

Sound Control Doors (Lift)

Acoutical Performance Data
Sound Transmission Loss Data, dB

1/3 Octave Band Center Frequency, Hz	100	125	160	200	250	315	400	500	630	800	1K	1.25K	1.6K	2K	2.5K	3.15K	4K	5K	STC
STC 51
QSL-51	36	34	40	43	44	47	47	47	50	50	53	52	52	52	54	57	60	63	51
All tests performed by Riverbank Acoustical Laboratories, an independent NVLAP accredited acoustical testing facility. The test method conforms with ASTM Designations E90-02 and E413-87.