Naco along with HASL are now able to offer an extremely high performance vertical blade storm louvre within a 110mm deep profile!

During recent testing at the BISRIA testing house, in accordance with EN13030, the ’Short’ Blade SLV-S returned a Coefficient of Discharge (Cd) figure of 0.409 and Class 1 water rejection. There was no measurable water penetration at a face velocity of 3.89 m/s during the test period.  The results also concluded that the short blade version of Naco’s standard SLV provides outstanding water rejection and air flow performance from such a compact product. The SLV-S compliments Naco’s existing high performance Storm Louvre range and provides architects, designers and contractors with a versatile product which can offer superior air handling and water rejection characteristics over conventional ‘Z’ type and double banked louvre systems.

If you wish to discover more about the Naco range of louvres we at HASL along with Ruskin Air Management Limited can offer an accredited CPD seminar on their range, titled “Metal Louvre Performance Design”.

The main areas covered within this CPD are: The European Standard Test BS EN ISO 13030 Louvre Blade Profiles Correct Method of Louvre Sizing Structural Considerations

This CPD is a user friendly presentation, aimed at all levels of architects, technicians, building services designers and anyone involved with the building envelope.  The CPD presentation gives practical guidelines on the correct choice of louvre for a particular application.  It also highlights the benefits of using ‘Performance Louvres', when space may be at a premium.

CPD seminars are usually held at your offices, at a time that suits you.  If arranged over lunchtime, Ruskin Air Management will provide lunch to all course attendees and upon completion of the seminar a certificate will be awarded to each candidate.

For more information, please contact Kevan Barrett at This e-mail address is being protected from spam bots, you need JavaScript enabled to view it , Alternatively, you can contact our sales office at HASL on Tel 01506 438083 or e-mail Andrew Nimmo at  This e-mail address is being protected from spam bots, you need JavaScript enabled to view it .

 Issue Date: April 2008