Owens Corning 703 Semi Rigid Fiberglass Board Sound Absorbing Thermal Acoustic Insulation,

Owens Corning 703 semi-rigid fiberglass boards offer a dual-purpose solution for builders, studio creators, and DIY enthusiasts who need reliable sound dampening alongside thermal control. This package includes six unfaced boards, each measuring 24 inches wide, 48 inches long, and 2 inches thick. The semi-rigid build gives them enough structure to fit inside acoustic frames or integrate directly into standard wall and ceiling assemblies.

Acoustically, these panels feature a Noise Reduction Coefficient (NRC) of 1.0, delivering high sound absorption suitable for professional recording setups or noisy workspaces. Thermally, the 2-inch fiberglass core carries an R-value of 8.7, which helps lower operating costs by reducing heat transfer through treated surfaces. The material is also certified to contain an average of 53 percent recycled glass content.

Safety compliance is straightforward thanks to an ASTM E84 Class A (or Class 1) fire rating. This makes the panels suitable for code-compliant commercial construction as well as residential DIY builds. Because the boards are unfaced, you will need to supply your own acoustic fabric, framing, or exterior facing depending on your project requirements.

Verdict: This six-pack of Owens Corning 703 fiberglass boards is a dependable pick for anyone constructing sound panels or adding thermal insulation. If you need verified fire resistance, strong sound dampening, and reliable heat retention in standard dimensions, this bundle delivers.

• Brand: ATSAcoustics / Owens Corning
• Quantity: 6 boards
• Dimensions: 24 x 48 x 2 inches per board
• Material: Semi-rigid fiberglass (53% average recycled glass content)
• Facing: Unfaced
• Noise Reduction Coefficient (NRC): 1.0
• Thermal Resistance: R-Value 8.7
• Fire Rating: Class A / Class 1 per ASTM E84

A great fit if you:

• Need acoustic absorption with an NRC rating of 1.0 for studio or room treatment.
• Are building custom acoustic panels that require standard 24x48-inch semi-rigid cores.
• Require Class A fire-rated thermal insulation to reduce heat transfer.

Consider something else if you:

• Need finished acoustic panels that arrive pre-wrapped in decorative fabric.
• Require boards thinner or thicker than the 2-inch specification.

What are the dimensions and quantity in this package?
The pack includes six unfaced semi-rigid fiberglass boards, each measuring 24 inches wide, 48 inches long, and 2 inches thick.

What is the acoustic and thermal rating of these boards?
The boards feature a Noise Reduction Coefficient (NRC) of 1.0 for sound absorption and a Heat Resistance R-value of 8.7 for thermal insulation.

Are these panels fire rated?
Yes, they are fire rated Class A or Class 1 according to ASTM E84 standards for construction and DIY use.