Thanks to their special thermal slots ‎(‎DL world‎-wide patent‎)‎‎,‎ elements both keep the surface temperature within the values set by European Safety Standards‎,‎ and help warm air convective movement‎,‎ thus combining safety with quicker heating to maximum‎.‎These heaters are equipped with fan‎,‎ which can be activated separately or together with the traditional heating element‎,‎ to increase the total heating power of the radiator‎,‎ and to select the most comfortable temperature in any room‎.‎Pre‎-assembled castors for an easy and practical transport of the appliance from one room to another‎.‎