Click “blue word” to follow us! 1、 Question: which components are included in the duct assembly in the installation measurement? 2、 Reasonable answer: the air duct components include: air outlet, side air outlet air duct components (valves), static pressure box and muffler, which can also be seen in the component library of gqi, the calculation software installed by Guanglianda BIM, as shown in the figure: pictures of air outlet, muffler and air valve: –.