Udderly Quiet® Anechoic Acoustic Foam 4″ Charcoal (Case of 4)

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Udderly Quiet® Anechoic Acoustic Foam 4″ Charcoal (Case of 4)

Designed to reduce echo in an environment, our anechoic panels are made of a lightweight polyurethane foam with a flammability rating of UL94 HF-1.

This product is no longer available in the State of California. Please contact us for approved solutions. 1-866-949-9269

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Weight 22 lbs
Dimensions 2 ft. x 4 ft.
Thickness 4 in.
Coverage 32 sqft. (8 sqft./sheet)
Quantity Case of 4
Color Charcoal
NRC Rating 1.25
Availability Usually ships in 7-14 business days

Udderly Quiet® Anechoic Acoustic Foam is a high performance, sound absorbing foam panel designed to reduce echo within an environment. Anechoic Acoustic Foam enhances the sound quality and aesthetics of any recording or listening environment.

This product is no longer available in the State of California. Please contact us for approved solutions. 1-866-949-9269


Engineered for Performance — The Anechoic pattern was designed to increase surface area, ultimately increasing the acoustic performance. Udderly Quiet® Anechoic Acoustic Foams absorb sound generated at low, mid and high frequencies.

Quality — Udderly Quiet® Anechoic Acoustic Foams are made with flexible, professional grade acoustic polyurethane foam. The foam keeps its color better and longer than other, lower quality foams. Udderly Quiet® Anechoic Acoustic Foams are firmer than other acoustic foam products on the market which adds protection against rips or tears.

Ease of Installation — Udderly Quiet® Anechoic Acoustic Foams are light weight and can be attached to a variety of surfaces. No special tools or materials are needed.

Personalization — Udderly Quiet® Anechoic Acoustic Foams are available in a variety of colors and sizes. Choose the color that best matches your personal décor.

Architectural Interest — The 3D, double convoluted pattern of the Udderly Quiet® Anechoic Acoustic Foams creates a visually unique environment.

Flammability — Udderly Quiet® Anechoic Acoustic Foams are manufactured from polyurethane foam that has a flammability rating of UL94 HF-1. Before choosing this product, be sure the flammability rating passes your local building code for exposed materials. /p>

Not just for Professional Studios — Udderly Quiet® Anechoic Acoustic Foams can be used almost anywhere reverberation (echo) is an issue. Just be sure local fire codes are met.

Product Availability

  • Charcoal: 4 in.(Case of 4, 32 sqft)


  • 24 in. x 48 in.
  • 48 in. x 48 in. (Special Order)
  • 48 in. x 96 in. (Special Order)

Need a thickness or size not listed above? Custom thicknesses and sizes are available, please call 1-866-949-9COW for details.



  • Auditoriums
  • Broadcast studios
  • Computer
  • Equipment Enclosures
  • Equipment Rooms
  • Gymnasiums
  • Gun Ranges
  • Home Recording Studios
  • Home Theaters
  • Industrial Facilities
  • Professional Theaters
  • Professional Recording Studios
  • Warehousing facilities


FREQUENCY 125 250 500 1K 2K 4K NRC*
4 INCH .32 .93 1.43 1.33 1.29 1.21 1.25

* NRC = noise reduction coefficient


Installation Details

Tools Needed: Tape measure, Pencil

Materials Needed: PL® Construction Adhesive

Installation PDF

Anechoic Acoustic Foam Install


All Polyurethane Foams, including Combustion Modified Foams, will burn. Do not expose to any flame source. Once ignited, they can produce rapid flame spread, intense heat, dense smoke and toxic gases causing death. Warnings should be given to your employees and or customers. Test data does not necessarily reflect a foams performance under actual fire conditions. Before purchasing any foam, be sure to check with your local code officials to confirm the required flammability rating of exposed materials for your area.

Customer Reviews

Average Customer Ratings: 4.8 (34 reviews)

The times I talked with you on the telephone and corresponded through email you have been very helpful and efficient. I would highly recommend Soundproofcow.com to anyone!

– S. Cimino, PA

I have emailed a lot of different manufactures and I have to say your customer service is head and shoulders above all of them. I emailed your company at about 9pm my time and when I woke up the next morning you had already answered my question and then the follow up was a few hours later. I am impressed. Thanks a lot for the quick turn around!

– E. Gustafson, NV

I just wanted to send a quick thank you for your rapid response and helpfulness. I very much appreciated it. You have been responsive in every way all through the process. It has been a pleasure doing business with you and your company.

– T. Alexander, CA

I just wanted to let you know that in the end, sealing the air spaces on this door worked just fine and took care of the problem.

I really appreciate you taking so much time to share your expertise with me, and in particular recommending I try the simpler solution before investing in more expensive noise barriers. That is a big credit to you and your business.

– Mike

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