Introduction: The Air Blown Fiber Unit “ABF” Enhanced Performance Smooth Fiber Unit (EPSU) is small size, light weight, enhanced surface outer sheath fiber unit designed for blowing into micro tube bundles by air flow. The outer dry acrylate layer provides a high level of protection and excellent installation properties, and it can be blown into the microduct of 5.0/3.5mm. The fibers are coated with a resin which provides excellent dimensional and thermal stability to cushion the fibers, in addition, the resin can be easily stripped in connecting the fibers. The outer sheath is a smooth, slightly ribbed polyethylene that is of low friction. The surface of the sheath is designed with slightly ribbed, compared to the surface of the traditional optical fiber cable, it provides not only the high level of mechanical protection, but also the perfect blowing performance. Application: The Air Blown Fiber Unit bundles assemblies consist of a number of cores 2, 4, 8 and 12 cores, that enables installation of air blown fibers cables. The fiber assemblies are bundled with outer sheath is a smooth, slightly ribbed polyethylene that is of low friction. The design makes the fiber cable are suitable for the following applications. • Outdoor and indoor connections • FTTH and last mile connections • Distribution networks with dense fiber capacity • Terminal connections Operation Features: The Air Blown Fiber Unit “ABF” bundles for FTTx systems are dedicated for the smallest microducts. Thanks to small diameter they are suitable to be used in projects requiring large number of slots and the fiber number between 2~12 core optical fiber units which can be routed into micro-ducts. The external diameter is between 1.2mm and 1.6mm, these are classified into optical fiber units with beads (EPFU) and optical fiber units with enclosures (EPSU). • Smaller diameter • Excellent environmental properties • The outer sheath is a smooth, slightly ribbed polyethylene • Network design flexibility • 5/3.5mm microduct suitable • fiber bundle diameter: 1.2 – 1.6 mm • Singlemode or Multimode • Greater blowing distance • Fiber: G.G652D, G.657A1, G.657A2 Temperature Performance: Storage and Transportation [°C]: -40 to +60 Installation [°C]: -20 to +50 Operation [°C]: -30 to +60 Mechanical Performance Test compliance: Tension: IEC 60794-1-21 Method E1 Bend: IEC 60794-1-21 Method E11 Crush: IEC 60794-1-21 Method E3 Marking: ABF assemblies have markings showing the cable type and fiber number, Year of manufacture, Length marking. The individual fiber core is identified by their color according to the standard fiber colors.