The ST3 is the larger, higher output version of the popular ST1 wood burner. It has the same simple modern design that will add a sense of class to any home. The ST3 is a ideal choice for larger homes and spaces, with a 7.3 kW output. Designed with simple, easy to operate user friendly controls. Constructed using a triple-layer convection system, there is a precision engineered welded outer and inner steel body with thermo-refractory fire brick inner linings. Designed with a large viewing window for amazing views of the fire. The flame pattern with the advanced "after-burner" system is quite unique and the air-wash clean glass system ensure a clear view of the flames. The ST3 has a 5"(125mm) diameter top flue outlet (there is no rear flue exit). Can be used with 5" diameter flue liner or twin wall flue. SPECIFICATIONS Heat output: 7.3kW Height: 510 Width: 520 Depth: 325 Approx weight: 67kg Flue Size: 5" / 125mm FEATURES Large viewing window 4-8kW operating range Nominal 7.3kW 76.3% efficiency Ultra-clean burning Low maintenance No delicate complex parts to go wrong Suitable for use on 12mm hearth Generous firebox size