Underfloor duct systems

Underfloor duct systems

Underfloor trunking: Clean and flexible solution for large administrative areas


Underfloor trunking offers a simple and efficient supply solution for large administrative areas. With pull boxes and junction boxes, they enable effortless expansion of heavy and light current installations.

The underfloor system consists of high-quality trunking sections, junction boxes and pull boxes, which are supplemented with mounting brackets and elbows. The plenum boxes are laid on the bare concrete floor in an individual grid system, often based on the workplace. Duct entry begins at the floor manifold to ensure a smooth connection.


Advantages of underfloor trunking:

  • Easy replacement or expansion of installation kits as needs change
  • Possibility of retrofitting or adding additional cables without much effort or dirt
  • Flexible use thanks to the ability to convert pull boxes to junction boxes at any time

Underfloor trunking offers a long-standing and flexible solution for efficient power supply in administrative areas. With little effort, adjustments can be made and extensions implemented without affecting operations. Thanks to their reliability and functionality, the underfloor ducts are the optimal choice for modern office environments.

Product systems
  • UFK steel sheet channels and accessories
  • Plenum box 4 mm (BAK4)
  • Plenum box 5 mm round (BAK5)
  • Plenum box 12 mm (BAK12)
  • Plenum box 22 mm (BAK22)
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Underfloor duct 200x30 mm
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Underfloor duct 200x40 mm
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Underfloor duct 200x50 mm
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Underfloor channel 300x30 mm
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Underfloor channel 300x40 mm
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Underfloor channel 300x50 mm
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Underfloor channel 400x30 mm
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Underfloor channel 400x40 mm
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Underfloor channel 400x50 mm
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Underfloor system with square plenum box and aluminum junction boxes, edge height 4mm for UFK 200x30 underfloor duct.
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Underfloor system with square plenum box and aluminum junction boxes, edge height 4mm for UFK 200x40 underfloor duct.
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Underfloor system with square plenum box and aluminum junction boxes, edge height 4mm for UFK 200x50 underfloor duct.
170
Underfloor system with square plenum box and aluminum junction boxes, edge height 4mm for UFK 300x30 underfloor duct.
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Underfloor system with square plenum box and aluminum junction boxes, edge height 4mm for UFK 300x40 underfloor duct.
172
Underfloor system with square plenum box and aluminum junction boxes, edge height 4mm for UFK 300x50 underfloor duct.
180
Plenum box BAK4 for fastening to the slab formwork.

The installation of underfloor ducts requires a minimum height of the concrete cover (60mm). If this height is not available, special boxes can be ob...
190
Underfloor system with square plenum box and chrome steel/aluminum junction boxes, edge height 12mm for UFK 200x30 underfloor duct.
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Underfloor system with square plenum box and chrome steel/aluminum junction boxes, edge height 12mm for UFK 200x40 underfloor duct.
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Underfloor system with square plenum box and chrome steel/aluminum junction boxes, edge height 12mm for UFK 200x50 underfloor duct.
200
Underfloor system with square plenum box and chrome steel/aluminum junction boxes, edge height 12mm for UFK 300x30 underfloor duct.
201
Underfloor system with square plenum box and chrome steel/aluminum junction boxes, edge height 12mm for UFK 300x40 underfloor duct.
202
Underfloor system with square plenum box and chrome steel/aluminum junction boxes, edge height 12mm for UFK 300x50 underfloor duct.
210
Underfloor system with square plenum box and chrome steel/aluminum junction boxes, edge height 12mm for UFK 400x30 underfloor duct.
210
Underfloor system with square plenum box and chrome steel and aluminum junction boxes, edge height 22mm for UFK 200x40 underfloor duct.
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Underfloor system with square plenum box and chrome steel and aluminum junction boxes, edge height 22mm for UFK 200x50 underfloor duct.
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Underfloor system with square plenum box and chrome steel/aluminum junction boxes, edge height 12mm for UFK 400x50 underfloor duct.
220
Underfloor system with square plenum box and chrome steel and aluminum junction boxes, edge height 22mm for UFK 300x40 underfloor duct.
221
Underfloor system with square plenum box and chrome steel and aluminum junction boxes, edge height 22mm for UFK 300x50 underfloor duct.
230
Plenum box BAK22 for fastening to the slab formwork.

The installation of underfloor ducts requires a minimum height of the concrete overlay (60 mm). If this height is not available, special boxes can b...
240
Underfloor system with round plenum box aluminum, edge height 5mm for underfloor duct UFK 200x40.
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Underfloor system with round plenum box aluminum, edge height 5mm for underfloor duct UFK 200x50.
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Underfloor system with round plenum box aluminum, edge height 5mm for underfloor duct UFK 300x40.
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Underfloor system with round plenum box aluminum, edge height 5mm for underfloor duct UFK 300x50.