Guangzhou Yizhong Aluminum Industry Co., Ltd. [China]

Material:Plastic,PA(nylon) and ABS They are used in volume damper inside it's assembled in the blade to adjust the direction

1.Material:Plastic,PA(nylon) and ABS 2.They are used in volume damper inside3.  It's assembled in the blade to adjust the air direction and volume

4.The damper size can be customized.

Nylon wheel gear used for volume damper