The base plate, also called the protector disk, lies on the bottom of the Grill body in the monolith.
It is placed in the middle of the fire basket. It serves the additional heat insulation in the ceramic grill body.
You can further increase the insulating effect of the protector disk by sprinkling a little sand on the bottom of the monolith before the stone is inserted.
The base plate is made of high quality ceramic.