A range of draught stabilisers from Kutzner and Weber.
Models ZUK are without a positive pressure damper, and are used for reducing excess negative draught in the chimney system.
Model ZUK-S has a positive pressure damper. An EPDM seal allows the draught to be regulated quietly and tightly. It is temperature and condensate resistant. When used with pellet burners the seal stops spillage of smoke over the initial firing period.