The roof terminal can be supplied with a variety of accessories to assists with various installation requirements. There are three different roof adapters available: Marseilles tile, lead-flashing plate for pitched roofs and a flat flashing plate. The flue system may be connected to the terminal with two different systems: the 118/80 diffuser TEE for twin pipe installation, and the 118/100 conical reducers for installation with concentric pipes. The reducers may be equipped with a flange, and flue gas test points if required. Available either painted or unpainted.