... . The major parts are louvre frames, glass blades, glass binds and inner installation instruments. (2)The features are as following: 1 ... when the louvres are closed. 4. The speed, direction, and scope of ventilation canbe adjusted as will. 5. The glass louvres could ... louvre,nashiji glass louvre. Bronze glass louvre, clear glass louvre and obscure glass louvre etc. (4)Color: Clear, Green, Blue, Bronze ...