The vertical fabric duct doesn't need the steel cables; if both ends of the vertical fabric duct are connect to other fabric duct, only need the tension ring to stabilize the fabric duct . If any of the ends of the vertical fabric duct are not connect to the other duct, the tension ring need to be fastened to the building structure, like the floor, roof, post or the truss.
There are many standard ducts of the DurkeeSox fabric ventilation system. Some of them need to measure at the worksite before manufacture, meanwhile most of the standard fabric duct can manufacture according to the drawings and that amount will up to 80% to the whole amount and the delivery period also can be secured. When the plan changing, we can provide some fabric connector to do adjust and manufacture the final part after measuring. For some tiny change of the scale, we can adjust them by using special customized connectors.