The louvered return air outlet is often made of aluminumprofile material, with a surface treated by anodic oxidation,which is straight and smooth. It is suitable for refrigeration,heating and ventilation projects, especially for the return airof purification projects such as super-clean rooms, wash-rooms, bathrooms, large supermarkets and hospitals.Features: A filter screen can be installed at the rear of the airoutlet. The window frame is connected to the window framepivot through a rotating shaft. As the window frame is con-nected to the window frame shaft, when it is necessary toclean or replace the filter screen, just rotate the window out-ward, remove the filter screen for cleaning or replacement,which saves time and effort. Color: The surface can also bebaked with paint or electrostatically sprayed as per the user's requirements. The color is available as per the user'srequirements.