These shutters or louvres were not provided by a supplier, but were constructed by the builder to suit our specifications for the this project. But I can suggest Shading Systems of Australia (http://www.reflexshade.com.au/) as a good manufacturer/supplier of external shading devices. They did the timber shutters on our recent project in Portsea which you can see at the following link: http://www.mitsuori.com/projects/#/portsea-sleepout/
Mitsuori Architects