DuraMicro HDPE is offered in two variations, one designed for creating a new direct buried pathway, the other specifically for placing as a subduct in an existing line. Both smooth and ribbed inner lining options are designed for easy cable placement. DuraMicro DB (Direct Buried) is a MicroDuct range created to withstand impact and suitable to be directly buried. The product is designed for installation of fibre bundles with a co-extruded, permanently lubricated inner layer called Silicore. The product is used in other DB bundles such as DuraMulti and DuraFlat. The DuraMicro DI (Direct Install) is designed to be installed by pulling, blowing, or pushing in existing duct systems. Installation can be done with single MicroDucts or bundles.