Excellent sound absorption, temperature control and energy conservation in sheet metal ducts — this liner does it all. It’s faced with a tightly bonded mat to give the airstream a smooth surface, resisting damage during installation and operation.

Applications

Certifications
Product Features
Proven Performance
Delivering proven strength against air erosion testing at over 170 miles/hour — 15,000 ft./min. — for trusted temperature and sound control in metal ducts.
Quality Design
Built with a tough, tightly bonded mat facing, this liner is fire-resistant, non-corrosive, durable and resilient. Designed to withstand damage from normal handling and shop abuse.
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.
Product Details
Technical Data & Forms Available
Technical Data
Property (Unit) Test Performance
Corrosiveness ASTM C665 Does not accelerate corrosion of steel 
Corrosion ASTM C1617 Pass 
Maximum Service Temperature ASTM C411 250° F (121° C) 
Air Velocity ASTM C1071 Max. 6,000 ft./min. (30.5 m/sec.)
Tested to 15,000 ft./min. (76.2 m/sec.)
Water Vapor Sorption (by weight) ASTM C1104 Less than 3%
Mold Growth ASTM C1338, UL 2824, ASTM G21, ASTM G22 Pass
Surface Burning Characteristics (flame spread/smoke developed) ASTM E84, UL 723, CAN/ULC S102 FHC 25/50; UL Classified
 
Forms Available
Density Thickness** Width  Length
1.5 PCF
(24 kg/m³)
1" (25 mm) 34"–36"* (864 mm–915 mm)
46"–48" (1168 mm–1219 mm)
56"–72" (1422 mm–1829 mm)
50' (15.24 m)
100' (30.48 m)
140' (42.67 m)
200' (60.96 m)
2.0 PCF (32 kg/m³) 1.5" (38 mm) 50' (15.24 m)
90' (27.43 m)
2" (51 mm) 50' (15.24 m)
100' (30.48 m)
0.5" (13 mm) 100' (30.48 m)
1" (25 mm) 50' (15.24 m)
100' (30.48 m)

*Widths of 34"–36" not available with edge coating.
**Non-standard widths for all 0.5", 1", 1.5", and 2" products from 34"–36", 46"–48" and 56"–72" are available in 25" (6.35 mm) increments of minimum order quantity.
Thermal Conductance “C”* and Resistance “R”†
Thermal Conductance “C”* and Resistance “R” (ASTM C177)
Mean Temperature 75° F (24° C)
Product Conductance "C" Resistance "R"
1.5 PCF
(24 kg/m³)
1" (25 mm) 0.24 (1.42) R-4.2 (0.74)
1.5" (38 mm) 0.17 (0.97) R-6.0 (1.06)
2" (51 mm) 0.13 (0.74) R-8.0 (1.41)
2.0 PCF
(32 kg/m³)
0.5" (13 mm) 0.48 (2.73) R-2.1 (0.37)
1" (25 mm) 0.24 (1.36) R-4.2 (0.74)
1.5" (38 mm) 0.16 (0.91) R-6.3 (1.11)
“C Units” BTU ft2 ∙  hr  ∙ ˚F (W m2 ∙ ˚C) “R Units” ft2 ∙  hr  ∙ ˚F BTU( m2 ∙ ˚C W)

*The lower the value, the better the performance. The higher the value, the better the performance.
 
Sound Absorption Coefficients
 
Sound Absorption Coefficients | ASTM C423, Type A Mounting
Type Octave Band Center Frequency (cycles/sec.)
125 250 500 1000 2000 4000 NRC
1.5 PCF)
(24 kg/m)
1" (25 mm) 0.18 0.28 0.73 0.85 0.91 0.90 0.70
1.5" (38 mm) 0.23 0.50 0.87 0.92 0.93 0.93 0.80
2" (51 mm) 0.37 0.76 1.02 1.00 0.98 0.92 0.95
2.0 PCF
(32 kg/m3)
0.5" (13 mm) 0.10 0.17 0.43 0.59 0.73 0.75 0.50
1" (25 mm) 0.25 0.35 0.69 0.89 0.96 1.01 0.70
1.5" (38 mm) 0.27 0.55 0.87 0.99 1.00 0.98 0.85

Coefficients determined per ASTM E795 Type A Mounting.
NOTE: ASHRAE Handbook for HVAC Applications – Sound and Vibration Control contains insertion loss values for lined sheet metal ducts.
Friction Loss
 
Friction Loss  |  Inches of Water Per 100'
Ft./min. Hydraulic Diameter
Velocity 10" 16" 24" 32" 40" 72" 100"
500 0.054 0.030 0.018 0.012 0.009 0.005 0.003
600 0.077 0.042 0.025 0.018 0.013 0.007 0.004
700 0.104 0.057 0.034 0.024 0.018 0.009 0.006
800 0.134 0.074 0.044 0.031 0.023 0.011 0.008
900 0.169 0.093 0.056 0.039 0.029 0.014 0.010
1000 0.207 0.114 0.068 0.048 0.036 0.018 0.012
2000 0.806 0.443 0.266 0.186 0.141 0.069 0.046
3000 1.797 0.988 0.594 0.415 0.315 0.153 0.103
4000 3.179 1.748 1.050 0.734 0.557 0.271 0.181
5000 4.952 2.724 1.636 1.143 0.867 0.422 0.283
Mechanical Fastener Location and Liner Interior Width
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
 
Liner Interior Width
No. Pins inches (mm)
0 ≤ 8 ≤ 203
2 9-16 229-406
3 17-28 432-711
4 29-40 737-1016
5 41-52 1041-1321
6 53-64 1346-1626
7 65-76 1651-1930
8 77-88 1956-2235
9 89-100 2261-2540
All Product Resources
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