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Double Bank Louvre

Where ventilation is required and a good level of rain defence, double stage louvres are the answer. The louvres can be extruded in lengths up to 6m long in the Architectural Line and are available in 50mm or 75mm blade spacing.

BladeAirflow velocity in m/sAirflow
Space0.00.51.01.52.02.53.03.5Coefficient
50AAAAABCC0.291
75BBCCCDDD0.239

 

ModelBlade Spacing (mm)Blade Depth (mm)Blade ConfigurationFront Blade OrientationRear Blade OrientationSupport Mullions
AI-502050137TwinHorizontalHorizontalHidden
AI-752075137TwinHorizontalHorizontalHidden
MI-502050145TwinHorizontalHorizontalVisible
MI-752075145TwinHorizontalHorizontalVisible

Double stage 66


Material

High grade extruded aluminium to grade 6063 T5 and T6. Tensile strangth of 152 – 300MPa.

Finish
Anodised, polyester power or PVDF coatings


Rain Defence

More than 99% efficient, Class A rain defence classification up to wind speed of 2.0m/s allowing less than 0.75l/hr/m2 of water through the louvre using 50mm blade spacing.


Airflow

Class 2 airflow coefficient of 0.291 with 50mm

Span Table

Maximum mullion centres of 1.25m for wind load up to 5kPa.

Up to 1.5m for wind load up to 2kPa.

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