Sound Absorbption Data

Random Incident Sound Absorption
Octave Band Center Frequencies (Hz)

Model No.

Normal Thickness

125

250

500

1000

2000

4000

STC

QA - 1

1 inch

.12

.47

.85

.84

.64

.62

.70

QA-2

1 inch

.04

.46

.86

.81

.59

.31

.70

QA - 4

1 inch

.17

.30

.83

.82

.59

.37

.65

QA-7

2 inches

.07

.27

.96

1.13

1.08

.99

.85

QA-10

2 inches

.19

.99

.96

.80

.57

.33

.85

QA-14

4 inches

.21

.89

1.09

1.17

1.13

1.07

1.05

Sound Absorbtion Data

Random Incident Sound Absorption Octave Band Center Frequencies (Hz)

Model No.

Dimensions

125

250

500

1000

2000

4000

NRC

QA-4 Baffles

2‘ x 4’, 1” th.

.59

2.43

7.17

8.66

8.82

6.71

6.75

QA-10 Baffles

2‘ x 4’, 2” th.

.91

6.07

8.25

8.88

6.65

5.58

7.45

Model No.

Flame Spread

Smoke Density

Class

Vinyl-coated-fiberglass-cloth faced:
QA - 1, QA - 4, QA - 7
QA - 10, QA - 14, QA - 20

17.66

22.75

1, A

Silicone-coated-fiberglass-cloth faced:
QA - 1, QA - 4, QA - 7
QA - 10, QA - 14, QA - 20

4.95

11.43

1, A

Non-woven porous scrim faced:
QA - 1,QA - 4, QA - 7
QA - 10, QA - 14, QA - 20

5.07

.45

1, A