Performance tested to AS/NZS 4740:2000, Cascade Series® Two-stage louvre achieves Class A 100% effective rain defence, Class 2 aerodynamics and 60% free open area. The double
interlocking blades ensure 100% effective rain defence with reasonable pressure drops for a two-stage louvre. This aerodynamic louvre profile provides a good balance between these two compromising factors of rain defence and airflow while also ensuring zero vision screening. The Cascade Series®
two-stage louvre can be supplied in pre-fabricated panels or as a continuous louvre.