Round air duct installation kit manifold directly on Фd diameter, it can tear down the decorative cover with ST4.2 self-tapping screw fixation in the ceiling or side wall panel, and then use the bayonet form rotationally fixed decorative cover, removable very convenient. Features: 1, heater status, outlet adjusting hair down (maximum adjustable 30 °); cold state, the outlet to adjust to the hair up (maximum adjustable 30 °). Artificial can adjust the angle of 360 °. 2, air distance, noise. 3, rotating sphere with a double-sealed, so that the minimum amount of air leakage. For a large area of ??the side air public places such as stadiums, exhibition centers, airports or various hall and assembly workshop