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Rectangular gray-green mineral fiber acoustic panel, 24 by 48 inches, four inches thick

Auralex

Auralex Acoustic Panel 4MF24 Mineral Fiber 24in x 4ft

SKU CH-7M2C-EXM2A

Mineral-fibre acoustic panel measuring 24 by 48 inches with an NRC of 1 and ASTM E84 Class A fire rating

  • ColorGray/Green
  • ASTM E84 Class A fire rating meets strict building-code requirements
  • NRC 1 absorbs virtually all incident sound energy across the panel
  • Mineral-fiber core withstands temperatures below 1200 °F for durable performance
  • Three 24 × 48 in panels deliver 24 sq ft of coverage per pack
  • 4 in thickness provides deep broadband absorption for critical listening spaces

Acoustic Coverage per Pack

Each pack delivers 24 square feet of mineral-fiber absorption across three panels measuring two feet wide by four feet long. The gray-green finish suits studios, rehearsal spaces and commercial interiors that need broadband control.

Build Integration

Panels are four inches thick and rated to ASTM E84 Class A fire standards, allowing direct mounting on walls or ceilings without additional fire barriers. The mineral-fiber core tolerates temperatures below 1200 degrees Fahrenheit for safe placement near lighting or HVAC.

Sustained Absorption

With a Noise Reduction Coefficient of 1 the material maintains full broadband performance during extended sessions, resisting compression and thermal drift that degrade thinner foams. Mineral fiber does not off-gas or crumble, so absorption stays consistent over years of daily use.

Highlights

  • ASTM E84 Class A fire rating meets strict building-code requirements
  • NRC 1 absorbs virtually all incident sound energy across the panel
  • Mineral-fiber core withstands temperatures below 1200 °F for durable performance
  • Three 24 × 48 in panels deliver 24 sq ft of coverage per pack
  • 4 in thickness provides deep broadband absorption for critical listening spaces

Specifications

ColorGray/Green
BrandAURALEX ACOUSTICS

Questions about this item

At what temperature will the mineral fiber panels start to degrade under continuous heat?

The panels are rated for temperatures less than 1200 degrees F, so sustained exposure above that limit is where material breakdown would begin.

How much noise and heat does the panel itself generate when installed in a room running HVAC all day?

The mineral fiber panel is a passive absorber with no moving parts or power draw, so it adds zero operational noise or heat to the space.

What mounting hardware or adhesive must I already have to install these 24-by-48-inch panels?

The package includes three 4-inch-thick mineral fiber panels only; you will need to supply your own impaling clips, Z-clips, or construction adhesive rated for the panel weight.

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