Echo Eliminator™ Acoustical Backer - Natural Cotton FiberAbsorber

Natural Cotton Fiber Acoustical Backer With Anti-Microbial Fabric Facing

Echo Eliminator™ Acoustical Backer is a cost-effective, high-performance acoustical absorber made from bonded acoustical cotton (B.A.C.) manufactured with recycled fibers. Designed to be installed behind perforated panels, stretched fabric systems, wood slat assemblies, and other (visible) finish materials, this lightweight acoustical backing helps dramatically improve sound absorption while remaining hidden behind a visible facade material. Ideal for commercial, educational, industrial, and architectural spaces, Echo Eliminator Acoustical Backer delivers excellent acoustic performance, Class A fire-rated safety, and environmentally responsible construction in one easy-to-install solution. Fiberglass-free and 100% recyclable, it offers a sustainable alternative for projects where both acoustic control and indoor environmental quality matter.

See less

Downloads / Product Resources

Product Data Sheet
Technical specifications Installation
Step by step guide CSI Specs
Industry standard format Test Reports
Acoustic, fire and material testing Sustainability Documents
For projects pursuing LEED, WELL, or LBC Misc. Data
SDS, warranty, care & maintenance

View All Resources

Product Specs

Applications

Wood slat wall and perforated metal wal panel systems, wood slat ceiling systems, perforated wood wall panels, perforated wood ceiling panels, stretch fabric wall systems, DIY fabric-wrapped acoustical panel systems, a backer for decorative acoustical clouds, perforated metal ceiling panels, perforated metal wall panels, CNC-cut decorative acoustic panels, micro-perforated acoustical assemblies, linear wood ceilings, acoustical millwork backing, theater wall treatments, recording studio wall systems, podcast and broadcast room treatments, home theater acoustical treatments, conference room wall systems, open office acoustic treatments, school classroom acoustic upgrades, gymnasium wall systems, auditorium wall assemblies, church and worship space acoustics, restaurant and hospitality acoustical treatments, mechanical room sound absorption, equipment enclosure sound lining, OEM acoustic product manufacturing, direct-mount to black ceiling surfaces, backer for WallMate stretch-wall systems, backer for site-built stretch fabric wall systems, backer for track-mounted fabric systems

Material Composition

Natural cotton fiber acoustical core with black antimicrobial bonded to face

Thickness

Standard: 1/2", 1" and 2"
Optional: 1-1/2" (note: minimum order quantity applies, call for details)

Density

1/2" thick: 3.0 lbs. pcf
1", 1-1/2" and 2": 1.5 lbs. pcf

Size

1/2" thick: 48" wide x 100' long
1" thick: 48" wide x 50' long
1-1/2" thick: 48" wide x 25' long
2" thick: 48" wide x 25' long

Color

Recycled blue cotton fibers with black antimicrobial fabric facing

Installation Method

Adhere to surface
Mechanical fasteners or stick pins

Acoustical Specs

Echo Eliminator Acoustical Backer – Sound Absorption Coefficients
	Mount	125Hz	250Hz	500Hz	1KHz	2KHz	4KHz	NRC
½″ – 3lb./cf.	A	.00	.11	.26	.54	.70	.83	.40
1″ – 1.5lb./cf.	A	.07	.33	.72	.99	.99	.99	.75
1½″ – 1.5lb./cf.	A	.07	.30	.86	1.10	1.05	1.03	.85
2″ – 1.5lb./cf.	A	.35	.94	1.32	1.22	1.06	1.03	1.15

Material Performance

Thermal Resistance (R-Value):

Thermal Performance of HVAC Acoustic Insulation
Tested in accordance with ASTM C518
PRODUCT		K-VALUE		C-VALUE		R-VALUE
Thickness		K-VALUE		C-VALUE		R-VALUE
Inch	(mm)	BTU×in(h×ft^2×°F)	W÷(m×°C)	BTU×in*h×ft^2×°F)	W÷(m×°C)	R	W÷(m×°C)
½	(13)	.25	.036	.50	2.84	2.0	.35
1	(25)	.25	.036	.25	1.42	4.2	.74
1½	(38)	.25	.036	.17	0.97	6.0	1.06
2	(51)	.25	.036	.13	0.74	8.0	1.41
The higher the R-Value, the greater the insulating power.

Fire Performance

Class A/1 Non-Flammable

Environmental

Physical Properties of HVAC Acoustic Insulation
PROPERTIES	PERFORMANCE	TEST METHOD
Operating Limits Temperature Velocity	Maximum 250° (121°C) 5000 fpm	ASTM C 411 ASTM C 1071
Surface Burning Characteristics (Fire Hazard Classification)	Flame Spread Max: 25 Smoke Developed Max: 50 Class A / Class 1	ASTM E 84 UL 723 NFPA 255
Corrosion Resistance	Pass – No Growth	ASTM G 21 ASTM C 1338 ASTM C 739
Bacteria Resistance	Pass – No Growth	ASTM G 22
Water Vapor Absorption	Less Than 1% By Weight	ASTM C 1104

Product Compliance of Acoustic Duct Liner
Quiet Natural Fiber Acoustic Duct Liner has the physical properties that regularly meet the requirements of the following current specifications, standards, and codes.
FIRE SAFETY STANDARDS NFPA 90A Installation of Air Conditioning and Ventilating Systems NFPA 90B Installation of Warm Air Heating and Air Conditioning System
BUILDING CODES ICBO International Conference of Building Officials BOCA Building Officials and Code Administrators CABO Council of American Building Officials SBCCI Southern Building Code Congress International