DuraMulti, MicroDucts, are small diameter conduits ranging from 5 - 20 mm Outer Diameter that provide a pathway for fiber cables. They are a natural evolution of standard conduits as space in networks is a premium and as new technologies develop, they typically decrease in size. DuraMulti is two or more MicroDucts bundled under an oversheath. Both products can be installed using standard installation methods in common applications. Choose the correct product by application and installation method listed below.