Abstract: An adjustable vented chimney cap system has a cylindrical base member with vent openings and a cap member that has a cover member and a cylindrical body with vent openings. The base member may be mounted onto the chimney of a grill. The cap member may be mounted onto the base member whereby the cap member can be rotated relative to the base member such that the vent openings can be adjusted to control the amount of hot gases escaping from the grill. In some embodiments, the vent openings in the cap member and the vent openings in the base member may have the same geometry. In some embodiments, the vent openings in the cap member and vent openings in the base member may have different geometries.

Abstract: An outdoor grill adjustable vented chimney cap assembly having a tubular base member with vent openings and a cap member having a cover member and a tubular body with vent openings, the base member being adapted to be mounted onto the chimney of a grill, the cap member being mounted onto the base member whereby the cap member can be rotated relative to the base member such that base vent members can be adjusted to control the amount of hot gases escaping from the grill.