Technical features:

1. The tuyere blades can be adjusted arbitrarily in the range of 0 ~ 180, and different air supply distances and diffusion angles can be obtained by adjusting the blades to different angles.

2. The connection between the blade and the outer frame adopts a special rivet shaft connection mode, which not only ensures that the blade is not loose at any angle, but also ensures that the blade is flexible and convenient to adjust.

3. The neck is designed with four fixing pieces, which can be directly connected with the pre-installed air volume adjustment switch or mounting frame by bolts, making the construction faster and more convenient.

4. The shape of the blade is designed as a wing, which has the advantages of low wind resistance and low noise.

5. It is made of aluminum profile, and its surface is oxidized, and it can also be electrostatically sprayed to meet the decoration requirements.

6. It can be used as an air return outlet.