The draughts have two types: single layer draught and double layer draught.
The draughts are made of aluminum alloy

The draughts are often either used in the ends of air conditioner, or mated with ventilating pipe disk.
The draughts have two types: single layer draught and double layer draught.
The draughts are made of aluminum alloy, their surfaces are treated with anode oxidation or baked paint, static plastic spraying.
Draught angle can be adjusted in 0°~90°.
Draught can be mated with adjustable valve or filter net.