Storm Collar – Twin Wall Pipe 125mm (Black)

£34.75 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.

Storm Collar – for Twin Walled Pipe

Collar to secure around a twin wall flue system above the roof to divert the rain and elements away from the Flashing (Collar is typically sited 100mm above the Flashing and not directly covering it).

All items designed to secure or fit around the flue pipe measure wide enough to accommodate the larger outer diameter of twin wall flue. Please see data below for exact diameters.

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

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.

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

  • Finish: Black
  • Suitable for: 125mm Twin Wall
  • Top Diameter: 175mm
  • Base Diameter: 270mm
  • Warranty: 12yrs
  • Grade: 316

Additional information



Flue Diameter


Flue Parts


To Fit

Twin wall pipe