Grill apparatus and firebox assembly for use in a grill

A grill apparatus, comprising:

• a bottom portion having a bottom base, a bottom side wall and a bottom upper opening with the bottom side wall extending between the bottom base and the bottom upper opening forming an internal bottom cavity;
• a lid portion having a lid upper end, a lid side wall, and a lid lower opening with the lid side wall extending between the lid upper end and the lid lower opening forming an internal lid cavity, wherein the lid portion is coupled to the bottom portion with the internal bottom cavity and the internal lid cavity forming a cooking chamber;
• a firebox having a firebox lower opening, a firebox upper opening, and a firebox side wall extending between the firebox lower and upper openings forming a heat chamber, the firebox having a support structure extending from the firebox lower opening in a direction opposite the firebox upper opening, wherein the bottom portion receives the firebox with the support structure resting on an inner surface of the bottom base, wherein the inner surface of the bottom base, the support structure of the firebox and the firebox lower opening define a first air path from a lower portion of the cooking chamber to the heat chamber;
• and,
• an ash bucket having an ash bucket base, an ash bucket upper opening and an ash bucket side wall with the ash bucket side wall extending between the ash bucket base and the ash bucket upper opening defining an ash receptacle, wherein the ash bucket further includes an air vent extending from the ash bucket base into the ash receptacle and having an upper vent aperture with a vent cover connected to the air vent and disposed over the upper vent aperture to further define the first air path.