High-airflow acoustic louvre
Slimline straight-blade module with the highest airflow capacity in the CALM range.
- Configuration
- 150 mm straight blade
- Primary role
- Airflow + attenuation
COLT Louvre Systems / CALM Acoustic Louvre Range
CALM Acoustic Louvres
CALM modules help manage sound transmission while keeping plant, services and façade ventilation working as intended. Four blade configurations give projects a clear route from high airflow to maximum attenuation.
Product range
Explore the CALM acoustic louvre range.
Select depth and blade profile against the acoustic target, airflow demand, available space and desired façade condition.
Standard acoustic louvre
Straight-blade acoustic louvre for strong noise reduction and efficient ventilation.
- Configuration
- 300 mm straight blade
- Primary role
- Attenuation + airflow
Chevron acoustic louvre
Chevron blades provide high-frequency noise control with a solid metal appearance on both faces.
- Configuration
- 300 mm chevron blade
- Primary role
- High-frequency control
Deep-section chevron louvre
Deep chevron module for maximum acoustic attenuation in the most demanding environments.
- Configuration
- 600 mm chevron blade
- Primary role
- Maximum attenuation
Air movement and acoustic performance, resolved together.
Plant and mechanical services can create significant noise at openings and boundaries. CALM gives the ventilation path an acoustic strategy, rather than leaving sound control to a separate enclosure treatment.
Reduce breakout and ingress.
The CALM range is configured to reduce sound transmission across the frequencies most relevant to the project.
Keep the ventilation path useful.
Blade geometry and depth balance noise reduction with free area and pressure drop, so acoustic performance does not stop the system from moving air.
Build it into the façade strategy.
Modular CALM panels can form continuous runs, stand-alone screens or work alongside COLT Universal Louvre and ventilation systems.
Where CALM earns its place.
From occupied urban settings to heavy services environments, the same principle applies: let the building breathe without making its mechanical systems the loudest part of the site.
Office
Commercial office buildings
Maintain comfortable working environments where plant noise must be managed close to occupied spaces and neighbouring properties.
Data
Data centres & critical infrastructure
Support high volumes of equipment airflow while responding to strict acoustic criteria at the façade and site boundary.
Energy
Energy centres & cooling plant
Configure acoustic louvre walls for cooling towers, substations and energy equipment that need clear ventilation paths.
Industry
Industrial & specialist facilities
Combine durable, modular sound control with the practical access, screening and airflow needs of demanding operational sites.
Choose the acoustic route early.
The most effective CALM configuration starts with the required airflow, acoustic criterion, installation depth and exposure condition. Bringing those decisions together early helps avoid later compromises in space, cost and visual integration.
ALUMADE® can coordinate the relevant performance information, module layout and integration with the broader louvre system for your project.
Explore the CALM range