Sonex® Mini Acoustic Foam

(3 customer reviews)


Size: 2' x 4'
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Estimated Shipping Lead Time: 3-7 weeks; please call and speak with a Sales Representative for specific project lead time evaluation.

Sonex® Mini Acoustic Foam is designed for use in environments where high frequency noise control is required. Its unique sculpted pattern allows for maximum handling of high frequency sound waves. Sonex® Mini Panels are a safety-minded choice for use in machine enclosures and other confined spaces. It can withstand constant temperatures above 300° Fahrenheit, and will char, but not ignite, at temperatures above 1100° Fahrenheit. Sonex® Mini is Class 1 fire-rated and it is 100% fiber-free foam (part #MSO). Sonex® Mini has a minimal depth for use in applications where a thinner acoustic foam is required.


  • Reduces echo and reverberation
  • Improves speech intelligibility
  • Exceptional acoustical performance
  • Smaller convoluted surface pattern
  • Mold-resistant, fire-retardant
  • Ideal for enclosures or other applications requiring thinner panels

Technical Information For Sonex® Mini:

  • Size: 2′ x 4′
  • Thickness: 1″, 1.5″
  • Part Numbers: MSO-1, MSO-2, MSO-1HW, MSO-2HW, MSC-1, MCS-2
  • Material: Open-cell melamine-based foam
  • Finish: Natural Grey, Natural White, HPC Coated
  • Density: 0.5 to 0.7 lbs./cu. ft. (ASTM D3574-77)
  • Fire Rating: Class 1 per ASTM E 84
  • Microbial Growth: Passes UL 181, section 11
  • Fungus Resistance Rating: #0 per ASTM G21
  • NRC: 1″ (0.50), 1.5″ (0.65)
Sound Absorption (Hz) ASTM C423-90a
Thickness 125 250 500 1000 2000 4000 NRC
1″ 0.11 0.17 0.40 0.72 0.79 0.91 0.50
1.5″ 0.14 0.21 0.61 0.80 0.89 0.92 0.65

Installation Method:

  • These panels mount easily to any wall or ceiling surface with acouSTIC water-based adhesive.
  • Installation is best done at the end of the construction project.
  • Use clean gloves to prevent soiling material.
  • Melamine foam is fragile, please handle with care.
  • Do not install material of unacceptable quality.

PLEASE NOTE: Half of the panels per box have a positive pattern and half have a negative pattern, as the panels are meant to be installed alternating the patterns. Please layout your design and make necessary design changes prior to installation.

For more information on our Sonex® Mini Acoustic Foam,
call us at 800.782.5742 or contact our sales department.

Customer Reviews

3 reviews for Sonex® Mini Acoustic Foam

  1. True Seals

    Great Communication and know your products.

  2. T. Gregorek AV Consulting

    The color is sprayed on white foam. It’s very easy to crack the color layer.

  3. Daniel Rosenau

    I bought the sonex 2'x2' 2" thick before
    The sonex mini 2'x4' 1inch thick, I was expecting a little bit depper pattern in the foam that was a little bit of a disappointment.
    I have not put it up yet until next month, when we move to our new home but I believe it will be pretty close to the 2'x2' 2" thick as far as sound quality at least I hope so.