Performance tested to AS/NZS 4740:2000 Louvreclad Neptune Series® is a 48mm deep single stage extruded aluminium louvre with Class D 72% effective rain resistance, Class 2 aerodynamics and 50% free open area. The Neptune Series also matches the pitch and profile of the Kensington and Ellenborough Series and is often integrated with these profile for areas where blanking is required of where rain resistance is not a concern. This louvre is commonly used on louvred doors and small grilles, and where a general screening and ventilation louvre is required.