Weber 57cm Charcoal Barbecue Heat Controller - 7666Up to 7 hours of low and slow temp (110?? C 135?? C) before refueling Diffuser ring maximises entire 57 cm cooking grate for indirect low and slow Extreme direct high heat for searing; convection heat for crispy wings Dimensions: 11. 5cm H x 46. 5cm W x 46. 5cm D Webers Charcoal Heat Controller for 57 cm kettle charcoal barbecues, you can easily set up your barbecue for high heat searing or low and slow cooking. Comprised of a cone and diffuser ring,