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Tough and resilient, delivering an optimal combination of efficient sound absorption, low thermal conductivity and minimal air surface friction. With a black mat facing, it gives the airstream a smooth, tough surface that resists damage during installation and operation.

Applications

Certifications
Product Features
Proven Performance
Delivering proven strength against air velocity testing at over 140 miles/hour — 12,500 ft./min. — for trusted temperature and sound control in metal ducts.
ECOSE Technology
Our patented, bio-based binder is a smarter alternative to using phenol formaldehyde. It’s been foundational in our commitment to sustainability. For the world we live in.
Quality Design
This 3-lb/cubic ft. duct liner board is designed to withstand damage during installation and operation. It’s fire-resistant, non-corrosive and helps prevent bacterial growth.
Product Details
Technical Data
Technical Data
Property (Unit) Test Performance
Corrosiveness ASTM C665 Does not accelerate corrosion of steel 
Corrosion ASTM C1617 Pass 
Air Velocity ASTM C1071 Max. 5,000 ft./min. (25.4 m/sec.) Tested to 12,500 ft./min. (63.5 m/sec.)
Maximum Service Temperature ASTM C411 250° F (121° C), Max. thickness 3"
Mold Growth ASTM C1338, ASTM G21 Pass
Water Vapor Sorption (by weight) ASTM C1104 3% or less
Surface Burning Characteristics (flame spread/smoke developed) ASTM E84, CAN/ULC S102, UL 723 UL/ULC Classified FHC 25/50
Forms Available
Forms Available* 
Thickness Density Width Length
1" 3.0 PCF
(48 kg/m³)
24" (610 mm),
48" (1219 mm)
48" (1219 mm)
1½" 96" (2438 mm)
2"
 
36" (914 mm)
72" (1829 mm)
96" (2438 mm)
120" (3048 mm)

*Consult Price Book for minimum order quantities. Pallets available on made-to-order basis.
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)
4.25 PCF
(68 kg/m³)
1" (25 mm) 0.225 (1.56) 4.4 (0.78)
1½" (38 mm) 0.15 (0.85) 6.6 (1.16)
2" (51 mm) 0.11 (0.62) 8.9 (1.56)
rigid_plenum_liner_Runits_Cunits.png

1The lower the value, the better the performance. 2The higher the value, the better the performance.
Sound Absorption Coefficients
Sound Absorption 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
4.25 PCF
(68 kg/m³) 
1" (25 mm) 0.06 0.24 0.69 0.99 1.05 1.02 0.75
Friction Loss and Mechanical Fastener Location
Friction Loss |  Inches of Water Per 100'
ft./min. Hydraulic Diameter
Velocity 10" 16" 24" 32" 40" 72" 100"
500 0.056 0.031 0.018 0.013 0.010 0.005 0.003
600 0.080 0.044 0.026 0.018 0.014 0.007 0.004
700 0.108 0.059 0.035 0.025 0.019 0.009 0.006
800 0.140 0.077 0.046 0.032 0.024 0.012 0.008
900 0.176 0.096 0.058 0.040 0.031 0.015 0.010
1000 0.216 0.118 0.071 0.050 0.038 0.018 0.012
2000 0.845 0.463 0.278 0.194 0.147 0.071 0.048
3000 1.887 1.034 0.620 0.432 0.328 0.159 0.106
4000 3.340 1.831 1.097 0.765 0.580 0.281 0.188
5000 5.206 2.854 1.710 1.193 0.904 0.438 0.293
friction_loss.png
Mechanical Fastener Location
Velocity per ft./min. (m/sec.) 0-2500 (0-12.7) 2501-5000 (12.7-25.4)
A. From corners of duct 4" (102 mm) 4" (102 mm)
B. From transverse end of duct liner 3" (76 mm) 3" (76 mm)
C. Across width of duct, on centers (min. 1/side) 12" (305 mm) 12" (305 mm)
D. Across length of duct, on centers (min. 1/side) 18" (457 mm) 18" (457 mm)
rigid_plenum_liner-(2).png
 
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