GK 12 firebox with air jacket

The GK12 is a classic firebox made of steel and cast iron, cast entirely in Gerkand. It has a nominal power of the air jacket 10 kW, side opening door and high quality heat resistant glass. Simple and elegant design fits into any interior.

Quality Gerkand!


Technical information

Nominal power in kW12
Maximum power in kW15
Air jacket nominal power in kW10
Overall dimensions (mm)695 x 400 x 1120
Weight (kg)100
Efficiency (%)68
Hearth Dimension (L x P x H) mm630 x 300 x 250
Glass dimension ( L/H ) mm595 х 370 х 4
Smoke exit positionUp
Chimney (mm)180
Maximum log size (mm)580
Finishing materials / thickness (mm)Steel, 4mm and cast iron
Type of cast ironGray Cast iron
Thickness of cast iron (mm)From 5 to 12
Gasket sealing materialsISO GLASS
Glass resistance and typeCeramic 750°C
Surface coatingHeat resistance to 600°C
Type of doorcast iron
Type of handlecast iron
Emissions of CO (%)0.3136
Exhaust temperature310°C
Mass flow of smoke (g/s)19,15
Dust concentration discarded in 13% СО2>49,15 mg/m³
Wood consumption (kg/h)3,6
Minimum distance to adjacent materials: rear / side / front / down (mm)200 / 200 / 1200 /400
Depression chimney required12 Pa
StandardEN 13229
Air flow850 m3/h
Fan powerMin 80w/h max 120w/h
Number of nozzles4 on the upper side
Air duct diameter100 mm

Product Benefits

  • heat resistant glass
  • Easy to use
  • nominal power of the air jacket 10 kW
  • side opening of the door


  • 3 years warranty
  • Hand welded seams and assemblies
  • Cast iron foundry into the Gerkand factory
  • Business and individual high value service

Product variations

The fireplace with air jacket GK 12 is also available in the following version::

Quick Request

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