The Fiber Optic Distribution Box is a multifunctional termination point to connect feeder cables with drop cables in FTTX communication network systems. To ensure consistent performance and longevity, it is essential to adhere to strict technical specifications. Fiber Distribution Hub (FDH): FDH closures are used in fiber-to-the-home (FTTH) networks to. Fiber Distribution box (FDB), known as optical Distribution box (ODB) as well, is a compact fiber management product of small size. As an important node in fiber optic access networks (such as FTTH) and backbone networks, it ensures efficient transmission. Clearfield's FieldSmart Fiber Distribution Hub (FDH) PON Cabinet family provides an interconnect environment from the feeder network through the optical passive splitter to the distribution network.