Heavy duty, anti-static, flame resistant spiral wound PVC coated, flexible fabric ducting. Produced in standard 300/400mm diameter nominal bore or special purpose diameters and lengths. These ducts are suitable for both supply and exhaust mode operation and fitted with deck flange to suit 318/400mm deck opening. Specially designed for marine “hazardous areas”. Outlet ducts are available in many sizes ex-stock. Also available as a detachable option.