2.7 Louvred Facade

As shown, the NAT Vent Box can be used to provide a vertical air inlet. This arrangement provides a design opportunity to provide colour and depth to a building’s façade.

A second advantage is that it is often possible to place NAT Vent Boxes within the corner of a room. Here, it may be easier to incorporate a deeper Vent Box 1 - 4. Alternatively, it may be possible to pull the facades out in certain areas such to accommodate a deeper NAT Vent Box. Both of these designs are recommended when external noise levels are particularly high.

A further benefit of using a vertical louvre is the potential to incorporate acoustic attenuation into the blades. For free area reasons, this design can only be adopted if the louvres run vertically.