Abstract: A store having a parallelepiped-shaped combustion chamber and a parallelepiped-shaped flue chamber smaller in all dimensions than the combustion chamber and with four similar shaped flue outlet frames on the top, rear and sides thereof. The stove includes one flue outlet collar and three blanking plates which can be fitted in any chosen arrangement to the flue outlet frames. The stove has a lift-off hob giving access to the flue chambers even when the flue outlet collar is fitted in the top outlet frame. The fire door occupies the full frontal area of the combustion chamber and the side walls are each formed in two parts of substantially uniform section. The combustion chamber base has sinuous finning.