A highly customizable line of fabric air duct and dispersion systems provides facilities with precise control of indoor environments. The systems are useful in industries that require strict temperature and humidity control, such as airports, sports facilities, and other commercial spaces. The entire run of a fabric system acts as a diffuser providing uniform airflow along the length of the system. Various methods achieve this uniformity, including air-porous fabrics, linear vents, nozzles, and orifices. Fabric systems are customized for each application and are designed for precision airflow and targeted air speeds.