Performance tested to AS/NZS 4740:2000 Louvreclad Varsity Series® Two Stage roll-formed colour-coated steel louvre achieves Class A, 100% effective rain defence, Class 2 for aerodynamics and 42% free open area. With a coefficient of discharge of 0.482, the Varisity Series 2 Stage louvre profile is one of the most aerodynamic louvres on the market. This makes it an ideal solution for mechanical plant rooms and louvred screening where there is a requirement for Class A 100% effective rain defence and low pressure drops.