PET acoustic wall panels are widely used in offices, commercial interiors, studios, and public spaces due to their eco-friendly materials and excellent sound absorption performance. However, one of the most critical factors affecting their performance is often overlooked:
Panel thickness.
So, how exactly does thickness influence the sound absorption of PET acoustic panels?
In this guide, Leedings Acoustic, a professional acoustic panels supplier in China, explains the relationship between thickness, frequency absorption, and overall acoustic efficiency.
Understanding How PET Acoustic Panels Work
PET acoustic panels are porous sound-absorbing materials. They work by:
- Allowing sound waves to enter the panel
- Converting sound energy into heat through internal friction
- Reducing sound reflection and reverberation
Because of this mechanism, the thickness of the panel directly affects how much sound energy can be absorbed, especially across different frequency ranges.
Why Thickness Matters in Sound Absorption
Thickness determines how deeply sound waves can penetrate the panel before reflecting back.
Key principle:
- Thicker panels absorb lower frequencies better
- Thinner panels are more effective for mid to high frequencies
This is because low-frequency sound waves have longer wavelengths and require more material depth to be absorbed effectively.
Typical Thickness Options and Performance
Most PET acoustic panels available from acoustic panels China manufacturers come in standard thicknesses such as:
6 mm PET Acoustic Panels
- Suitable for decorative applications
- Limited acoustic performance
- Primarily absorbs high-frequency noise
9 mm PET Acoustic Panels
- Entry-level acoustic performance
- Suitable for offices and light commercial use
- Balanced performance for mid frequencies
12 mm PET Acoustic Panels
- Widely used standard thickness
- Good absorption across mid and high frequencies
- Common choice for acoustic wall panels
24 mm PET Acoustic Panels
- High-performance acoustic solution
- Improved absorption of lower frequencies
- Ideal for studios, conference rooms, and large spaces
As a leading acoustic panels supplier, Leedings Acoustic offers multiple thickness options to meet different project requirements.
Thickness vs NRC (Noise Reduction Coefficient)
The Noise Reduction Coefficient (NRC) is a standard measure used to evaluate sound absorption performance.
General trend:
- Increasing thickness → higher NRC value
- Thicker panels → better broadband absorption
For example:
- 9 mm panels: moderate NRC
- 12 mm panels: improved NRC
- 24 mm panels: significantly higher NRC, especially at lower frequencies
However, thickness alone is not the only factor — density and installation method also play important roles.
The Impact of Air Gap Behind Panels
An often overlooked factor is the air gap between the panel and the wall.
Even thinner PET acoustic panels can achieve better performance when installed with a gap behind them.
Why?
- The air cavity allows sound waves to travel further
- This effectively increases the absorption depth
- Improves low-frequency performance without increasing panel thickness
This is why many acoustic panels suppliers recommend batten or frame installation systems for better acoustic results.
Choosing the Right Thickness for Your Project
The ideal thickness depends on the application:
For Offices and Commercial Spaces
- Recommended: 9–12 mm
- Focus: speech clarity and echo reduction
For Meeting Rooms and Conference Areas
- Recommended: 12–24 mm
- Focus: balanced acoustic performance
For Studios or High Acoustic Demand Spaces
- Recommended: 24 mm or thicker
- Focus: low-frequency control
Selecting the correct thickness ensures your acoustic wall panels perform effectively without unnecessary cost.
Why Work with a Professional Acoustic Panels Supplier
Not all panels perform equally. Working with an experienced acoustic panels supplier in China ensures:
- Consistent PET fiber density
- Verified acoustic performance (NRC testing)
- Proper product recommendations based on application
- Custom thickness options for projects
At Leedings Acoustic, we manufacture high-quality PET acoustic panels and akupanels for global B2B clients, ensuring both performance and design flexibility.
Conclusion
So, how does thickness influence PET acoustic panels’ sound absorption performance?
- Thicker panels improve low-frequency absorption
- Thinner panels are suitable for high-frequency control
- Air gaps can enhance performance without increasing thickness
Understanding these principles helps you choose the right acoustic wall panels for your project.
If you are looking for a reliable acoustic panels supplier in China, Leedings Acoustic offers a full range of PET acoustic panels and akupanels designed for optimal acoustic performance.