Performance tested to AS 4740:2025, Altura Series® 300 is an extruded aluminium 100mm pitch by 300mm deep vertical chevron louvre that provides Class 2 aerodynamics and 80% Free Open Area. With a coefficient of discharge of 0.5 this louvre is typically specified for enclosed commercial plant rooms where there is a requirement for a low pressure drop and zero vision screening. Alongside this, the Altura Series® is one of the only louvres which provides 80% free open area.