The Manhattan Portable Gas Heater features a unique heat flow system that draws cold air into the bottom of the fire and releases it out of the top vents as warm air. No flue or chimney is required; simply connect it to a Butane 11.34kg gas cylinder. It provides a real flame effect and is equipped with a safety oxygen depletion cut-off device. With variable heat settings and fitted castors for easy movement, this 3.4Kw heater measures H: 67.5cm W: 37cm D: 51cm.