NBFU (Nestor Blown Fibre Unit) is a optical fibre cable for microduct installation by blowing or pushing.
- Optical fibres: Coloured single-mode fibres according to the ITU-T G.657.A1.
- Buffer layer: UV cured polymer.
- Outer sheath: Polyolefin compound. Colour of the sheath is blue. Nominal thickness is 0,2 mm.
- Marking: Marking printed on the sheath at one meter interval: Cable type - year of manufacture - length marking.