Aside from the obvious appearance reasons there are a few other benefits louvres can provide when used in smoke ventilation.

• Glazed AOV louvres provide more flexbility in structural opening dimensions, making full, floor to ceiling height window possible.
• It’s not always possible to install a Julliet Balcony of  other fall arrest structure on facades, so louvres can work better in these situations.  During design, the individual blades can be customised to be fixed instead of opening with the rest of the vent.
• Thermal efficiency, louvres can have better U-Value ratings than casement windows.