Based in Norcross, Georgia, Primo is one of the top producers of ceramic grills and grilling accessories in the world, and the only ceramic grill manufacturer in the USA. Their Primo Oval XL offers more capacity than any other ceramic cooker in the world. The oval design itself is Primo's very own patented design. All of their grills and smokers are made of a premium-grade ceramic blend and coated with a protective lead-free porcelain glaze. These superior cookers also feature a stainless steel bottom vent door and cast-iron chimney top vent. They're so confident in their craftsmanship that all Primo grills are backed by a 20 year warranty. Primo, indeed.