Feature:

1. Apply with high-strengh anodizd aliuminum alloy .

2. There is sealing element between vane and vane, vane and exterior frame.

3. Manual type can be adjusted in 6 levels  between 0~90 degree , but the automatic one can stay at  any  angle.

4. NO.HFK-LM1 applies with gear rotating which is hided the inside of the frame with plastic cover  to prevent  the damage and dust.