Features: 1. Single layer adjustable blades, which can achieve different air supply distances and diffusion angles. 2. Can be used as air supply and return ports. 3. Can be made of aluminum or iron. 4. Can be used separately with regulating valves when used as air supply ports. 5. Can be made into an openable structure when used as a return port, and can be used in conjunction with a filter screen
feature
1. Single layer adjustable blades can achieve different air supply distances and diffusion angles
2. Can be used as a supply and return air outlet
3. Optional aluminum or iron production
4. When using the air supply outlet separately in conjunction with the regulating valve
5. Can be made into an openable structure for the return air outlet and used in conjunction with a filter screen