The difference between the PRO-Line and the PRO+ Line is the extra addition of a professional ash disposal. When using the GrillRing for very long periods of time, such as events and catering, the extra ash tray, ash slider and ash grid in the PRO+ Line ensure easy interim removal of ash. The fire also immediately receives an extra oxygen boost, so you can enjoy the flames all evening while preparing food. By using the ash pan, the bowl and the GrillRing cool down quickly after an event and you can transport them safely.
In addition, there is the option to make the whole thing mobile with the PRO+ Mobile and possibly the PRO Workmade, a handy workbench for extra cooking support.