About Weber Grills Weber-Stephen Products Co., headquartered in Palatine, Ill., is the premier manufacturer of charcoal and gas grills, grilling accessories, and other outdoor room products. A family-owned business for more than 50 years, Weber has grown to be a leading seller of outdoor grills worldwide. * Easily convert your Weber Genesis 300 to a smoker * Porcelain-enameled steel smoker box * Stainless steel cooking grate * Fits Genesis 300 series with front-mounted control panel