HDL High Performance Drainage Louvre

HDL is a new generation of weatherproof louvres with top water penetration resistance performance, aesthetically pleasing outlook and flexibility in layout and application with full technical support including PNAP APP-37 and self-generated noise levels. HDL is patent pending, application no. 201220114708.6 (SIPO, PRC).

It has the following key features:

  • Continuous blades supported by hidden mullions to achieve aesthetic requirements
  • 100% water penetration resistance performance to 3 m/s intake velocity and Class A to 3.5 m/s intake velocity
  • Drainable via hidden mullions rather than “screenable” to overload louvres below
  • Same outer blade for different requirements to give widest range of application and flexibility
  • Complete technical support including self-generated airflow noise levels