产品结构及特性：叶片可动，可调整气流吹出角度，两层叶片交叉组合
产品规格：根据客户技术要求尺寸来定制
可加附件：风量调节阀和过滤网
Structure and Features:
Two layer cross-conlbination blades are movable to adjust the directions of the airflow
Specifications：
Customized according to the customers·requirements
Additive Accessories：
Opposed blade damper, filter screen