The document describes several operable glass louvre systems from AGP Pty Limited including the Fineline Series, Fineline-XT Series, Fineline-XTS Series, and Centaline Series. The Fineline Series features aluminum mullions that conceal operating mechanisms. The Fineline-XT Series adds bulb seals between louvre blades for weather protection. The Fineline-XTS Series allows top louvres to open up and bottom louvres to open down. The Centaline Series is a simpler and more cost effective center-pivoted system.