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ventilation
Warm air
Depending on the model, up to eight duct openings, 145 mm in diameter, distribute hot air. At least two should be connected. They can be used to supply neighbouring rooms. If the heat ducts are long, it is a good idea to boost the effects of natural convection using a fan system. You can chose the position of the warm air outlet ducts : on top, at the back, or at the side.
Auxiliary ventilation unit
A high-capacity mechanical ventilation unit supplements natural ventilation for a significantly improved stove performance. It pulsates the required quantity of air with slow-spinning and thus quiet fans.
Three possibilities :
. a 600 m3 ventilator fitted under the hearth (and accessible from inside the hearth). . two side ventilators (2 x 200 m3) . one independent 600 m3 ventilator to be installed in an adjacent room.
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Stûv 21/85 with partial raising of glass door when installation height is limited.

Stûv 21/85 with total raising of glass door (standard configuration) : full raising puts the door completely out of sight. The deflector is shaped to improve draught.

A support, available as an option, makes it easy to fix the height of the fireplace.
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Other available accessories
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| Barbecue grill |
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200 x 200 mm inlet or outlet mesh for Ø150 mm
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Dual position inlet or outlet mesh |
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Single position inlet or outlet mesh |
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| Straight pipe Ø 180, 200 or 250 mm |
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Side ventilators (2 x 200 m3)
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Independent ventilator (600 m3) |
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Insulating kit Promafour ® 400 |
Stûv 21 claddings
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