The slx 45 has identical looks and features to the slx 20 but features a thermostatically controlled integral boiler that delivers a heat output sufficiency to power 8 9 radiators and ample hot water the slx45 is available in gloss black vitreous enamel matt black or any of charnwoods other eight colour options the slx 45 is also suitable for running under floor heatingthermostat is fitted as standardproduces 50 more heat to water than similar sized stoveslong internal flow path this h