VIRG’ optima acoustic grilles are used to attenuate ventilation noise on building facades. They provide rain protection thanks to the blade profiles and noise protection thanks to the absorbent material integrated beneath the blades.

Design
Composition
- Made of galvanized steel or aluminum
- Rock wool 55 kg/m3 with protective glass veil
Dimensions
- Height: from 450 to 2500 mm
- Length: from 450 to 2500 mm
- Thickness: 150 mm (slim grilles) / 300 mm (single grilles) / 600 mm (double grilles)
- For larger dimensions, assembly in multiple elements
Options
- Stainless steel 304 or stainless steel 316
- Paint according to RAL color chart
Acoustic Performance
The acoustic performance of our grilles is remarkable due to a high sound reduction index and an optimal absorption coefficient over a wide frequency range. This ensures effective acoustic attenuation and excellent equipment ventilation.


Key advantages of our acoustic grilles
High acoustic performance
Compact design
Easy installation
Custom Design
Each product model is custom-adjusted in our workshops, benefiting from our design and engineering expertise. We create optimized solutions for you, perfectly adapted to the needs of your structures.
Technical Specifications
Product sheetOther features
Special feature
- Suitable for outdoor use
- Fire performance: Rock wool M0
Installation
Simple installation:
- From the inside using fixing clips
- From the outside using a perforated frame, available upon request
Depending on project constraints, a double installation is
possible to enhance the acoustic performance of the system.
Industrial Acoustic Grille: Custom Silent Ventilation
Ventilation systems are essential for the proper functioning of industrial and technical buildings. However, they very often present a weakness in terms of noise. The industrial acoustic grille makes it possible to reconcile air circulation and noise reduction, while meeting the regulatory and technical constraints of professional environments.
The VIRG’ optima acoustic grille, developed by ECIB, is designed with this in mind: to offer a high-performance silent ventilation solution tailored to the requirements of each industrial project.
What is an industrial acoustic grille?
An industrial acoustic grille is a ventilation device specifically designed to limit the propagation of noise through a building's air inlets and outlets. Unlike a conventional ventilation grille, it incorporates absorbent elements and an internal design that attenuates sound waves while maintaining a controlled airflow.
This type of grille is particularly used when:
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technical equipment generates high noise levels,
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ventilation is essential for the site's operation,
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acoustic requirements are strict (industrial environment, urban areas, sensitive sites).
What is the purpose of an acoustic ventilation grille?
The acoustic ventilation grille plays an essential role in industrial noise control. It specifically helps to:
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reduce external noise pollution,
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protect nearby work areas,
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comply with acoustic thresholds imposed by regulations,
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prevent noise transmission between different areas of a building.
It is often installed on:
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industrial building facades,
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technical rooms,
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air handling units,
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generator sets,
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ventilation or extraction systems.
How does an acoustic louvre work?
An acoustic louvre operates on a simple principle: absorbing noise without blocking airflow.
The VIRG’ optima acoustic louvre is designed with:
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a robust metal structure,
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internal sound-absorbing elements,
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optimized airflow pathways.
Sound waves are partially absorbed by the integrated acoustic materials, while air circulates through the louvre via a carefully designed path to minimize pressure drops. This design achieves effective acoustic attenuation while maintaining the ventilation performance required for the site.
Acoustic Performance and Technical Data
The performance of an industrial acoustic louvre is primarily evaluated by its acoustic attenuation, expressed in decibels (dB), and its behavior across different sound frequencies.
The VIRG’ optima acoustic louvre is designed to meet the demands of industrial environments:
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significant reduction of noise transmitted by technical installations,
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adaptation to required airflow rates,
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compatibility with mechanical and climatic requirements.
Exact performance depends on the chosen configuration (dimensions, thickness, materials), allowing for a tailored approach for each project.
Industrial Applications of Acoustic Louvres
Industrial acoustic louvres are used in many sectors of activity:
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manufacturing industry,
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energy,
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logistics,
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data centers,
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technical tertiary buildings,
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transportation infrastructure.
In each of these contexts, the acoustic louvre effectively addresses airflow passages, which are often responsible for significant noise leakage.
Why Choose an ECIB Acoustic Louvre?
ECIB stands out for its comprehensive approach to acoustic treatment. The VIRG’ optima acoustic louvre is not a standard product, but an integrated solution, designed to adapt to real-world site constraints.
Choosing ECIB means benefiting from:
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recognized expertise in industrial acoustics,
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custom silent ventilation solutions,
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technical support from design to installation,
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measurable and controlled acoustic performance.
This approach ensures a reliable, durable, and regulatory-compliant solution.
FAQ – Acoustic Louver
What is the difference between an acoustic louver and a standard louver?
An acoustic louver incorporates sound-absorbing materials and a specific design to reduce noise, unlike a standard louver which only handles ventilation.
Does an acoustic louver reduce airflow?
An acoustic louver is designed to minimize its impact on airflow. Its design is optimized to maintain ventilation performance while reducing noise.
Where should an industrial acoustic louver be installed?
Acoustic louvers are installed on air inlets and outlets of industrial buildings, technical rooms, and installations requiring silent ventilation.
Are ECIB acoustic louvers custom-made?
Yes, ECIB designs acoustic louvers tailored to the specific constraints of each industrial project.
Industries served by our silent ventilation systems for technical buildings
Made in France
Product Quality
Study and Design
Turnkey Solution

+33 (0)3 21 13 49 13
Our team is available to offer you tailor-made acoustic solutions
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