Microducts – Indoor – High Grade or UL Riser


Microducts with a sheath made of halogen-free, flame-retardant material. The ducts are also available in a UL Riser rated series. The microducts have a solid, low-friction inner surfacecoating for best installation performance. There is also a single microduct available with an extra protection sheath for mounting directly onto walls with cable clamps.

Features and Benefits

  • Halogen-free, flame-retardant
  • Riser Approved, UL1666 OFNR
  • 1, 4, 7, and 12 sub-duct options


The microducts and duct assemblies are made of halogen-free, flame-retardant polymer. The ducts are designed for indoor use (Riser) and verified according to UL 1666 Riser Cable Flame Test, OFNR. For standard indoor ducts specified according to IEC specifications, see product information 28701-MPB3020+. The duct assemblies are available in six versions with 1 to 12 sub-ducts (microducts). Each microduct has an outer/inner diameter of 5/3.5 mm. The flame retardant properties are verified according to UL1666 OFNR Riser, as well as all relevant IEC standards.


The indoor tight protected duct assemblies consist of a number of microducts with an inner low friction, antistatic surface that enables installation of air-blown fiber. The microducts are optimized for best performance in combination with the Hexatronic Ribbonet® Air Blown Fiber Units.

Technical Specifications

  • Type: Indoor Installation, High Grade, IEC 60332-3-24 or UL 1666 OFNR
  • Dimensions, microducts: Ø 5/3.5 mm
  • Capacity: 1, 2, 4, 7, 12, 19, 24-way