wind duct 3d model

A passive wind-direction guiding and filtration channel, traditional Chinese architectural component, isolated on a clean white background, NO buildings, NO classrooms, NO characters. It is a long, linear hollow trough designed to fit a sloped tiled roof, featuring subtle mechanical vents, a rectangular HEPA filter module at the end, and a traditional ridge-end ornament (燕尾) at the top. 3D asset, clean geometry, highly detailed.