JH-L Louver System integrates ventilation, rain protection and sand resistance, covering a range of high-performance products. The rainproof louvers are certified by AMCA (USA), sand-resistant louvers comply with British standards, and ventilation louvers achieve an opening ratio exceeding 50%. As the lead compiler of the national standard Technical Requirements for Ventilation Louvers for Buildings and a member of AMCA, JANGHO provides reliable louver solutions for various building applications with excellent performance and adaptability.
Types of JH-L Louver Systems
JANGHO provides different louver configurations according to airflow, weather exposure and building function.
● Rainproof Louvers – designed to maintain ventilation while reducing rainwater penetration through the facade opening.
● Sand-Resistant Louvers – suitable for projects in desert and dusty environments where airborne sand and particles must be controlled.
● Ventilation Louvers – provide large free-air openings to support natural or mechanical ventilation requirements.
● Acoustic Louvers – combine airflow with sound attenuation for plant rooms, mechanical areas and other noise-sensitive applications.
System dimensions, blade configuration and installation details can be coordinated according to facade design and project performance requirements.
Performance of Architectural Louver Systems
The performance of a louver system depends on the balance between airflow, weather protection and architectural integration. JANGHO evaluates blade geometry, opening ratio, drainage path and surrounding facade interfaces during system design.
Key performance considerations include:
● Airflow Efficiency – louver opening and blade arrangement can be optimized to support ventilation requirements.
● Rain Protection – rainproof configurations are designed to limit water penetration while maintaining airflow.
● Sand Resistance – dedicated blade arrangements help reduce sand and airborne particle ingress in harsh environments.
● Acoustic Control – acoustic configurations can help reduce noise transmission around mechanical ventilation areas.
● Structural Performance – louver framing and connections can be engineered according to wind pressure and facade loading conditions.
Ventilation and Opening Ratio
For building ventilation applications, the louver system must provide sufficient free area while controlling rain and environmental exposure.
JH-L ventilation louvers can achieve an opening ratio of more than 50%, helping support efficient airflow for mechanical rooms, plant areas and facade ventilation zones.
During project design, JANGHO can coordinate the louver size, blade spacing and opening area according to required airflow volume, pressure loss and architectural constraints.
Rainproof Louver Solutions
Rainproof louvers are designed for facade openings that require continuous ventilation while limiting rainwater entry.
JANGHO provides rainproof louver solutions with AMCA-certified performance, helping designers evaluate airflow and water penetration performance using recognized testing criteria.
Typical applications include:
● Mechanical plant rooms
● Equipment floors
● Ventilation shafts
● Parking structures
● Utility areas
● External facade openings
The final louver configuration can be selected according to rainfall exposure, wind conditions and required airflow.
Sand-Resistant Louvers for Harsh Environments
In desert and high-dust environments, facade ventilation openings must control sand ingress while maintaining sufficient airflow.
JH-L sand-resistant louvers are designed for these conditions and selected systems comply with relevant UK sand-resistance standards.
They can be applied to:
● Mechanical rooms
● Data and equipment facilities
● Infrastructure buildings
● Industrial facilities
● Commercial and high-rise developments in desert regions
Louver blade geometry and system depth can be coordinated according to environmental exposure and project ventilation requirements.
JANGHO can coordinate acoustic requirements with airflow performance and facade design to develop project-specific louver configurations. JANGHO combines curtain wall louver product development with complete facade engineering capabilities, supporting both standardized systems and project-specific configurations.
