The Radiator allows for efficient heat recovery from the fumes. This is possible thanks to its ribbing and thick 2mm (14gauge) steel single wall construction which improves heating efficiency. It is installed as a first element of the chimney system on wood burning stoves and fireplace inserts. Increases effectiveness of your wood burning heater. May require reduction adapter RA630 to fit on some stoves or masonry fireplace inserts. It is an essential part of the Fireplace Heat Distribution System.