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ecoverb roll natural fiber liner

EcoVerb™ Roll Acoustic Duct Liner

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Free shipping is valid on any order shipped to a single address in the mainland USA. Standard shipping is covered. Overnight or 2-day delivery will cost extra and is not available on custom-made products.

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Bulk discounts available. Save per roll at 4 and 8 rolls.
$179.99
Covers 0 SF
$179.99

EcoVerb™ Roll Acoustic Duct Liner

EcoVerb™ Roll Acoustic Duct Liner is designed to reduce noise inside HVAC systems by absorbing sound from airflow and room-to-room noise through ductwork. This duct liner is made from recycled cotton fibers so making it an excellent, flexible, no-itch, fiberglass alternative that’s easy to install in residential and commercial ductwork. You’ll get cleaner acoustics between rooms and a quieter system overall—without compromising on air quality or fire safety.

 

Free Shipping Details

 Thickness 

 Free Shipping - Ground 

 Free Shipping - LTL Freight 
 1/2"   0 - 1199 Sq Ft   1200+ Sq Ft 
 1"   0 - 599 Sq Ft   600+ Sq Ft 
 2"   0 - 399 Sq Ft   400+ Sq Ft 

 

 

Features

  • Reduces duct noise – Excellent sound absorption for airflow noise inside HVAC systems
  • Recycled cotton fiber – Safe to handle and better for indoor air quality
  • Improves system efficiency – R-4 value per inch helps improve duct insulation
  • Flexible and easy to install – Conforms to all duct surfaces
  • Fire rated and code compliant – Class A Fire Rated and meets NFPA 90A/90B and building codes (ICBO, BOCA, CABO, SBCCI)
  • Proudly made in the USA - Sustainable, high-performance acoustic solution

 

 

Specs

 Full Roll Dimensions   4' x 100' (1/2") 
 4' x 50' (1") 
 4' x 25' (2") 
 Thickness   1/2", 1", or 2" (Nominal) 
 Density   1.5, 3.0 
 Color   Marble blue with black protective facing 
 Thermal Resistance (R-value)   4.0 per inch 

 ** Handling and shipping fibrous materials may slightly compress the material. After hanging or mounting, the material will uncompress. **

 

 

Resources

 Spec Sheet   EcoVerb Roll Product Sheet 
 Architect CSI Spec 

 EcoVerb Roll CSI Specification 
 Install Guide 

 EcoVerb Roll Acoustic Duct Liner Install Guide 

 

 

Material Testing

Noise Reduction Coefficient

 Frequency (Hz)   125   250   500   1000   2000   4000   NRC 
 1/2" EcoVerb™ Roll Acoustic Duct Liner   0.04   0.11   0.26   0.54   0.70   0.83   0.40 
 1" EcoVerb™ Roll Acoustic Duct Liner   0.07   0.33   0.72   0.99   0.93   0.96   0.75 
 2" EcoVerb™ Roll Acoustic Duct Liner   0.35   0.94   1.32   1.22   1.06   1.03   1.15 

 

 

 

 

 

 

 

Installation Instructions 

 

HVAC

  • Choose the correct thickness! If the liner is too thick, acoustics material will impede airflow. Small ducts (less than 10") should use the 1/2" thick liner. Larger ducts (12" x 12" or more) should use the 1" thick version. Commercial ducts (18" x 18" or more) use the 2" thickness.
  • For additional sound absorption, oversize your ducts (no more than 30%) to allow space for a thicker liner.
  • Install the EcoVerb™ Roll acoustic liner with the cotton side facing the inside wall of the duct. The black liner faces out towards where air is flowing. The facing protects the absorptive cotton fibers from airflow.
  • Recommended Adhesive: P329 Spray Adhesive, 3M Super 77, or equivalent

For more information, read our duct liner install guide!

 

 

Common Product Uses

  • Line HVAC ducts with acoustical liner for air duct noise reduction and reduce heat gain/loss.
  • If you do not have full access to the HVAC duct, installing EcoVerb Roll Liner as far down as your arm can reach in each duct will still reduce noise by at least several decibels. If additional sound reduction is needed, contact us for details on how to build a baffle.

 

Contact us if you have questions!