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Designed to bring an effective combination of efficient sound absorption, low thermal conductivity and minimal air surface friction. This board is made from fiberglass with an FSK bottom facing and black mat facing, giving the airstream a smooth, tough surface that resists damage during installation and operation.

Applications

Certifications
Product Details
Technical Data
Technical Data
Property (Unit) Test Performance
Corrosiveness ASTM C665 Does not accelerate corrosion of steel
Odor Emission ASTM C1304 Pass
Air Velocity ASTM C1071 Max. 5,000 ft./min. (25.4 m/sec.)
Maximum Service Temperature ASTM C411 250° F (121° C)
Mold Growth ASTM C1338, ASTM G21, G22 Pass
Water Vapor Sorption (by weight) ASTM C1104 3% or less
Surface Burning Characteristics
(flame spread/smoke developed)
ASTM E84, UL 723, NFPA 90A and 90B UL Classified FHC 25/50
Forms Available
Forms Available
Density Thickness Width Length
3.0 PCF
(48 kg/m³)
1" (25 mm) 48"
(1,219 mm)
60" (1,524 mm)
96" (2,438 mm)
120" (3,048 mm)
1⅜" (35 mm) 96" (2,438 mm)
1⅞" (48 mm) 96" (2,438 mm)
2" (51 mm) 60" (1,524 mm)
120" (3,048 mm)
4.0 PCF
(64 kg/m³)
1" (25 mm) 96" (2,438 mm)
120" (3,048 mm)
1⅜" (35 mm) 96" (2,438 mm)
Thermal Conductance "C" and Resistance "R"
Thermal Conductivity “C”1 and Resistance “R”2 |  ASTM C177 
Mean Temperature 75° F (24° C)
Product Conductance "C" Resistance "R"
3.0 PCF
(48 kg/m³)
1" (25 mm) 0.23 (1.31) 4.3 (0.76) 
1½" (38 mm) 0.15 (0.85) 6.5 (1.15)
2" (51 mm) 0.11 (0.62) 8.7 (1.53)
“C Units” BTU ft2 ∙  hr  ∙ ˚F W m2 ∙ ˚C  “R Units” ft2 ∙  hr  ∙ ˚F BTU m2 ∙ ˚C W
1The lower the value, the better the performance. 2The higher the value, the better the performance.
Sound Absorption Coefficients
Sound Absoprtion Coefficients | ASTM C423, Type A Mounting
Octave Band Center Frequency (cycles/sec.)
Product 125 250 500 1000 2000 4000 NRC
3.0 PCF
(48 kg/m³)
1" (25 mm) 0.13 0.24 0.56 0.83 0.92 0.98 0.65
1½" (38 mm) 0.19 0.41 0.89 1.02 1.03 1.04 0.85
2" (51 mm) 0.33 0.67 1.07 1.07 1.03 1.06 0.95
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