SFL SMW twin wall insulated chimney


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SKU: SKU18023
Manufacturer: Docherty

SMW is a prefabricated twin wall insulated chimney system that has been designed specifically to be used on solid, multi-fuel, gas and oil fired combustion equipment, operating under negative natural draught conditions.

  • Diameter range: 127mm, 150mm, 175mm, 200mm, 250mm, 300mm and 350mm
  • Inner liner material: 0.4mm grade 316L stainless steel
  • Outer casing material: 0.4mm grade 304 stainless steel
  • Insulating material: 25mm mineral wool
  • Insulation density: 250 Kg/m³
  • Joint method: Twist lock coupler and locking band
  • CE approved: Yes
  • Designation: BS EN 1856-1 T450 N1 D Vm L50040 G(50)
  • Maximum operating temperature: 450°C
  • Pressure capability: 40Pa
  • Condensate resistance: No
  • Corrosion class: See material specification
  • Soot fire resistance: Yes 
  • Minimum clearance to combustible material: 50mm

Tamworth Fireplace, Unit 9 Sterling Park, Claymore, Tame Valley Industrial Estate, Tamworth, Staffordshire, B77 5DQ

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