Atmosphere® Duct Liner

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

HVAC

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.

Product Details

Technical Data

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, Thermal Conductance “C”*, and Resistance “R”†

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)
	1.5" (38 mm)		90' (27.43 m)
	2" (51 mm)		50' (15.24 m)
	2" (51 mm)		100' (30.48 m)
	0.5" (13 mm)		100' (30.48 m)
	1" (25 mm)		50' (15.24 m)
	1" (25 mm)		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” (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.)
Type		125	250	500	1000	2000	4000	NRC
1.5 PCF) (24 kg/m³)	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