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Sonex® Pyramid Acoustic Foam offers an angled panel design with significantly greater surface area than flat surfaces, maximizing the effective area for acoustical control. When installed the pattern provides a continuous, seamless appearance. As a Class 1 fire-rated foam that is 100% fiber-free, Sonex® Pyramid Acoustical Foam meets regulations for virtually any environment where maximum noise control is required.
| Sound Absorption (Hz) ASTM C423-90a | |||||||
|---|---|---|---|---|---|---|---|
| Thickness | 125 | 250 | 500 | 1000 | 2000 | 4000 | NRC |
| Natural Grey and Natural White | |||||||
| 2" | 0.07 | 0.25 | 0.60 | 0.94 | 0.97 | 1.08 | 0.70 |
| 3" | 0.09 | 0.37 | 0.81 | 1.01 | 1.03 | 1.07 | 0.80 |
| 4" | 0.18 | 0.44 | 0.96 | 1.14 | 1.18 | 1.19 | 0.95 |
| HPC Coated Colors | |||||||
| 2" | 0.13 | 0.41 | 1.02 | 1.18 | 1.13 | 1.13 | 0.95 |
| 3" | 0.13 | 0.85 | 1.25 | 1.22 | 1.13 | 1.14 | 1.10 |

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What is HPC coating?
HPC is a high-performance coating that is applied to acoustical melamine foam base. Our exclusive water based HPC formulation improves durability and protects the acoustical foam from dust and dirt, allowing the surface to be cleaned using a damp cloth. The HPC coating is especially appropriate for use high-traffic areas. HPC Premium extends the HPC coating further by offering a line of brilliant colors from which to choose.
Are custom HPC colors available?
Custom HPC colors are available. Popular paint brands may be combined with our exclusive HPC formulation to produce unique designs for any project.
Customers with an order for custom HPC colors will receive a sample to approve prior to producing the order.