Increasing Adapter – Twin Walled Pipe 125mm to 150mm (Black)

£96.89 Inc VAT

HETAS approved, black and Stainless Twin Wall flue components and associated parts for creating new internal and external flue systems.

Available in 125mm-200mm internal diameters, all insulated parts feature a 25mm layer of Rockwool insulation, creating a 50mm greater outer diameter and come supplied with a Locking Band where applicable.

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Increasing Adapter 125mm to 150mm – Twin Walled Pipe

Adapter connecting Twin Wall pipe to Twin Wall pipe, increasing the internal diameter by 25mm (1″).

Designation number T450-N1-D-Vm-L50050-G60.

Available in Stainless and black finishes, 125mm-200mm internal diameters.

This item features a male Twin Wall connection on the underside, a female insulated Twin Wall connection on the top and is supplied with a locking band.

Please note – As with all twin wall parts the diameter quoted is the internal diameter – The external diameter is 2 inches larger due to the surrounding insulation.

  • Finish: Black
  • Inner Diameter at Base: 125mm
  • Outer Diameter at Base: 175mm
  • Inner Diameter at Top: 150mm
  • Outer Diameter at Top: 200mm
  • Connection: Push-Fit
  • Insulated: Yes (25mm Rockwool)
  • Locking Band Included: Yes
  • Warranty: 12yrs
  • Int / Ext Grade: 316 / 304

Additional information



Flue Diameter


Flue Parts


To Fit

Twin wall pipe

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