Feature:
1) Aluminum alloy material
2) Can be adjusted manually or automatically in 30�X
3) Surface is with diamond corner, can be opened by rotating left 45�X on horizontal directivity
4) Sealed by specail seal member between sphere and exterior frame to achieve the best air tightness, and keep the sphere direction under high air speed.
5) Can add sector air valve or round air valver as your requirement.
6) Easy installation and maintenance
7) Static painting as per requirement. (any color is available)

Functions: Ventilation, dispel heat.
Use: the aircondition blast orifice and large space spot, such as airport, gymnasium, each hall or large-scale fitting shop ect