Mulberry Beckett Boiler Matt BlackThe Becket is the largest in the Mulberry range and capable of heating 12 14 single radiators hot hot water and up to 7kw's of heat to the room. Brand Mulberry SKU MB 15 STYLE Traditional CONSTRUCTION Cast Iron BODY WARRANTY 5 Year PARTS WARRANTY None TOTAL HEAT OUTPUT 21kW OUTPUT TO ROOM 7kw OUTPUT TO WATER 15kw APPROX. NO. OF RADIATORS (SINGLE PANEL) 12 14 EXTERNAL COMBUSTION No FLUE SIZE 150mm (6") FLUE OPTIONS Top And Rear WIDTH 620mm (See diagram