The Spartherm Varia 1V 100h is the 1 metre wide wood-burning firebox. The Varia range is Spartherm’s most popular wood fire inserts. The model is equipped with useful hinged doors and external air connection. It is an elegant landscape-shaped wood fire that can be built-into a brick chimney or false chimney breast. It has slim-line frames that set off its lovely flame picture and a heat output of 13.5 kW.