Metaloterm MF is a double-walled, modular, soot-fire-resistant and pre-insulated exhaust air and exhaust system made of stainless steel. The universally applicable system is suitable for ovens, industrial plants, tiled stoves, open fireplaces, condensing, low-temperature and solid fuel fireplaces. Due to the proven quality, the warranty on the Metaloterm MF exhaust and exhaust air system is 10 years.


A modular twin wall insulated flue/chimney system

The Metaloterm® MF system is a modular twin wall insulated flue/chimney system, made of stainless steel, with a sealing ring. Metaloterm® MF is a universal flue/chimney system which is suitable for both high and low temperatures, non-condensing and condensing applications with flue gasses in positive and negative pressure. It can resist a chimney fire. Therefore the system is suited for a wide range of applications such as boilers, stoves and ovens.

The product range also contains a wide variety of silencers. For Passive houses the Metaloterm assortment provides the Iso-block which can be combined with MF. The system can also be used for CHP applications, in this case a special VITON® sealing ring might be necessary. Due to the proven quality Metaloterm® MF has a 10 year guarantee.


  • Universal chimney/flue system
  • Inner- and outer wall from high quality stainless steel
  • No terminal bridges, uninterrupted insulation from base plate to top stub
  • Stress free thermal expansion
  • Fast-build system without the need of sealants
  • Compatible with system Metaloterm® ME, UE and EN
  • High density and high quality insulation
  • High-temperature silicone sealing ring
  • Lightweight elements
  • Immediately ready for use
  • Chimney fire resistant

Schiedel BIM Catalogue

A range of Schiedel Products for Commercial and Residential are now available within our new 3D BIM (Building Information Modelling) Catalogue.

Engineers, planners and architects now can have an significant influence on making Schiedel the choice of the chimney at the beginning of the planning process, with the comprehensive data available for a range of components.

All BIM and AEC CAD formats, like Autodesk Revit, Nemetschek Allpan and Grafisoft Archicad for the respective CAD systems are available to engineers, planners and purchasers for free. You can add these formats under your own account section. Schiedel BIM is free to use and you just need to enter your email address to register and download your formats (for free!).

Technical data

Application Chimney / exhaust pipe
Mode of operation Dry / Wet
Pressure Negative / positive pressure
Operating pressure 5000 Pa
Operating temperature 600 ° C (P)
200 ° C (P / H)
Short-term temperature 600 ° C (P)
200 ° C (P / H)
Fuel Oil/wood/coal/pellets normal(wood)/gas
Sealant Before installation, remove the cover and door seals.
Inner shell
Material AISI 316L / EN 1.4404
Wall thickness up to Ø250: 0.4 mm
from Ø300: 0.5 mm
from Ø450: 0.6 mm
Outer shell
Material AISI 304 / EN 1.4301
Wall thickness Ø100 – Ø400: 0.5 mm
Ø450 – Ø700: 0.6 mm
Ø800 – Ø1000: 0.8 mm
Thermal insulation
Type mineral wool
insulation thickness Ø100 – Ø400: 25 mm
Ø450 – Ø600: 37.5 mm
Ø700 – Ø1000: 50 mm


Name Lacquer Type Code
Olive black Matt Soft touch Powder coating not heat resistant (up to 300 ° C) Cewetherm 300
Black grey Matte Powder coating not heat resistant (up to 300 ° C) Ral 7021

Other colors on request:

  • RAL Code
  • Powder coating | Nasslack
  • Shiny | Semi-gloss | Matt

System example



With this calculation tool, you can calculate the required distances in two ways:

  1. If the desired horizontal distortion is known and you want to know which degree position is the right one for the intended situation.
  2. If you want to know what kind of horizontal and vertical warping occurs when using a specific bend and intermediate length.

The relevant regulations (e.g. DIN 18160 Part 1) must be observed. If necessary, provide a cleaning or inspection opening. Subject to technical changes – dimensions in mm.


Bend angle:
Diameter: mm
Desired offset:
Size K: mm
Size: M: mm
Length between bends: mm
Offset height: mm

Bend angle:
Diameter: mm
Length between bends:
Size K: mm
Size M: mm
Offset span: mm
Offset height: mm


940003694 Schiedel MF Brochure

940003694 Schiedel MF Brochure

7.28 MB

Metaloterm MF declarations and technical documents

12.36 MB


Do you have any questions about our MF stainless steel chimney system? Contact us.

All fields marked with an * are mandatory.


Maximum size 10MB

Please note our privacy policy, on which any data used by the Schiedel Chimney Systems Ltd. is based on.


Would you like to be kept up-to-date about our new products, trends and innovations? Sign up to the newsletter.

Please wait...

The product range

Under the Metaloterm brand, we offer our customers single-walled, double-walled and concentric exhaust systems. Our single-walled, soot-fire-resistant and high-quality stainless steel systems are ideal for renovations and new buildings.

All products can be quickly assembled using a sleeve system and can be ordered in black, grey or anthracite. Our double-walled systems are also soot fire resistant and reusable. Thanks to an inner and outer jacket made of stainless steel and high-quality thermal insulation, there are no corrosion-causing cold bridges or thermal bridges. Our concentric systems have been tested with many device types in accordance with EN 613. You will also receive boiler connection pieces for each heat generator in black. Here, too, assembly is quick and uncomplicated thanks to our lightweight components.


A modular pre-insulated exhaust system with a sealing sleeve


Double-walled system


A modular, single-walled exhaust / exhaust air system with a special internal lip seal


Single wall system


A modular, pre-insulated exhaust gas / exhaust air system with a special internal lip seal


Double-walled system


A modular, air-gap-insulated exhaust system with a special internal lip seal


Double-walled system


A concentric air-exhaust system usable at high exhaust gas temperatures in negative pressure


Concentric system


High performance double layered flexible liner for chimney relining.


Flexible liners