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Bonded Acoustical Cotton (B.A.C.) The Most Cost Effective Acoustical Absorbing Material On The Market
Echo Eliminator is a high performance acoustical material made from recycled cotton. This product is ideal for noise control applications. Echo Eliminator can be used as an acoustic wall panel or hanging baffle. Common applications are school gyms, classrooms, lunch rooms and any application where a high performance noise control product is needed. Echo Eliminator is eligible for LEED™ credits, Class A fire rated and 100% recyclable.

Recycled Cotton (Green Acoustical Material)

Class A – Non-Flammable (Per ASTM E-84)


Easy to Install (Adhesively Applied)

Impact Resistant


Low Cost

High Light Reflectance

High Performance Acoustical Absorption

Relocatable (with Grommets)

Bonded Acoustical Cotton panels are ideally suited to school gymnasiums, cafeterias, classrooms, churches, multi-purpose rooms, community centers and more.

Standard Size – 2′ × 4′
Also available in 12″ × 12″, 2′ × 2′, 4′ × 4′ and 4′ × 8′ (Minimum quantities may apply, please call for details)

3lb per cubic ft – 1″ & 2″ thickness panels; 6lb per cubic ft – 1″ thickness panels

White, Marble Light Blue, Light Grey, Beige*, Graphite, Pure Blue, Navy Blue, Burgundy, Hunter Green and Black

Please note: Although we take extensive precautions and purge the lines between colors, due to the manufacturing process color inconsistencies – including dye lot variations – flecks, specks, and other slight surface blemishes are unavoidable. Please call for details.

All sizes are nominal and are subject to manufacturing tolerances that may vary ±1/8″. Exact fitting may require on site adjustment by the purchaser. Exact size and other unavoidable variables such as dye lot color variances, lighting conditions, pattern matching, directional materials, expansion and contraction due to environmental conditions. Project with exacted visual requirements and expectation must be identified for our special attention prior to ordering.

noise barriers
fabric wall panels
stretch wall systems
Marble Light Blue
soundproof walls
Light Grey
wall isolation
floor isolation acoustical panels
fabric wall panels
Pure Blue
soundproofing foam
Navy Blue
soundproofing door
Hunter Green
acoustic consultants
*Beige is a custom color and may not always be available. Dye lots are subject to color variation. Please consult with ASI before specifying or ordering this color.

Echo Eliminator™ WALL PANEL – Sound Absorption Coefficients
  Mount 125Hz 250Hz 500Hz 1KHz 2KHz 4KHz NRC
1″ – 3lb./cf. A .08 .31 .79 1.01 1.00 .99 .80
2″ – 3lb./cf. A .35 .94 1.32 1.22 1.06 1.03 1.15
1″ – 6lb./cf. A .07 .30 .86 1.10 1.05 1.03 .85
3/8″ – 6lb./cf. A .12 .10 .23 .56 .81 .89 .45

Echo Eliminator™ BAFFLE  – Sabins/Baffle
Avg. 125Hz 250Hz 500Hz 1KHz 2KHz 4KHz Sabins/Avg.
1″ – 2′ × 4′ 2.43 4.93 8.34 12.35 15.57 16.73 10.30
2″ – 2′ × 4′ 2.40 6.55 12.86 17.46 18.49 16.77 13.85