Bull Outdoor Products 88787 30" Stainless Steel Charcoal Bison Premium Outdoor Grill Head has been re-engineered for greater performance in your outdoor kitchen. The new vent system and gasket features allows for greater temperature control with the ability to regulate the oxygen flow into the firebox. Now you can set up the Bull Bison for slow and low BBQ, or crank it up to get that steak house quality sear on your steaks and chops.