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Air Excellent Radial Ductwork Systems

Radial ductwork systems differ from traditional trunk and branch ductwork systems by running ducts between a distribution box and each habitable and wet room. The distribution box is then connected to a ventilation unit using mass flow ductwork and a silencer. The system pressure drop is lower as a result. Continuous duct runs with mechanical connections at either end also mean less air leakage. The ventilation rates can be controlled by flow restrictors in the distribution box. Cross-talk between rooms is reduced to an absolute minimum. The Air Excellent circular ductwork ensures efficient air distribution between distribution boxes and the various rooms. Due to its circular shape, the Air Excellent ductwork can be installed easily and ensures keeping pressure losses to a minimum.


Discover The Full Air Excellent Distribution Range Below:

  • Ubbink_Air_Excellent_75mm_Semi_Rigid_Ductwork

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  • Ubbink_8_Port_Manifold_Dimensions

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  • Ubbink_8_Port_Manifold_Pressure_Loss

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  • Ubbink_8_Port_Manifold_Pressure_loss_chart

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Ubbink Air Excellent 75mm Semi Rigid Ductwork

Features & Performance 


  • Lightweight.
  • Low system pressure loss due to radial design.
  • Airtight (class D/ATC 2 up +/- 2000 Pa) thanks to mechanical connections, which minimises fan energy use and sound production.
  • TÜV SÜD and ISEGA tested and certified, REACH compliant.
  • Easy and quick to install.
  • Strong outer surface for damage-free installation.
  • Smooth inner surface for less pressure drop and a long-term clean system.
  • Anti-static and anti-bacterial properties.
  • For all new-build and renovation applications.
  • Complete set of accessories available.
  • Mix and match with semi-circular ductwork.


Dimensions AE34C


  • Outside (mm)        75
  • Inside (mm)           63
  • Surface (m2)         0.00312



Logistical Details


  • Weight per m (kg)                 0.33
  •  Weight per roll   50m (kg)  16.99
  • Quantity per roll (m)             50
Ubbink Brochure Air Excellent 75mm Ductwork Technical Data

  • Ubbink_Air_Excellent_90mm_Semi_Rigid_Ductwork

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  • Ubbink_16_Port_Manifold_Pressure_Loss

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  • Ubbink_16_Port_Manifold_Pressure_Loss_Chart

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Ubbink Air Excellent 90mm Semi Rigid Ductwork

Features & Performance 



  • Lightweight.
  • Low system pressure loss due to radial design.
  • Airtight (class D/ATC 2 up +/- 2000 Pa) thanks to mechanical connections, which minimises fan energy use and sound production.
  • TÜV SÜD and ISEGA tested and certified, REACH compliant.
  • Easy and quick to install.
  • Strong outer surface for damage-free installation.
  • Smooth inner surface for less pressure drop and a long-term clean system.
  • Anti-static and anti-bacterial properties.
  • For all new-build and renovation applications.
  • Complete set of accessories available.
  • Mix and match with semi-circular ductwork.


Dimensions AE48C


  • Outside (mm)        90
  • Inside (mm)           75
  • Surface (m2)         0.00442



Logistical Details


  • Weight per m (kg)                 0.42
  •  Weight per roll   50m (kg)  21.32
  • Quantity per roll (m)             50
Ubbink Brochure Air Excellent 90mm Ductwork Technical Data

  • Ubbink_Air_Excellent_50mm_Semi_Rigid_Ductwork

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  • Ubbink_24_Port_Manifold_Dimensions

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  • Ubbink_24_Port_Manifold_Pressure_Loss

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  • Ubbink_24_Port_Manifold_Pressure_Loss_Chart

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Ubbink Air Excellent 50x102mm Semi Rigid Ductwork 

Features & Performance 



  • Lightweight.
  • Low system pressure loss due to radial design.
  • Airtight (class D/ATC 2 up +/- 2000 Pa) thanks to mechanical connections, which minimises fan energy use and sound production.
  • TÜV SÜD and ISEGA tested and certified, REACH compliant.
  • Easy and quick to install.
  • Strong outer surface for damage-free installation.
  • Smooth inner surface for less pressure drop and a long-term clean system.
  • Anti-static and anti-bacterial properties.
  • For all new-build and renovation applications.
  • Complete set of accessories available.
  • Mix and match with circular ductwork.


Dimensions AE355C


  • Outside (mm)        102
  • Inside (mm)           50
  • Surface (m2)         0.00304



Logistical Details


  • Weight per m (kg)                 0.33
  •  Weight per roll   50m (kg)  9.80
  • Quantity per roll (m)             30
Ubbink Brochure Air Excellent 50x102mm Ductwork Technical Data


Click to discover the other components of our MVHR and ducting systems: