Exothermics’ DIR Dimple Insulated Heat Exchangers are designed specifically for high temperature applications up to 1550oF (815oC). They feature a fully wrapped inner and outer case and 4 inch thick internal high temperature insulation. DIR Heat Exchangers are available in a wide variety of sizes and flow configurations, such as counter-flow or cross-flow, to satisfy your needs, whether you are recovering heat from your ovens, preheating combustion air, or running a catalytic or thermal oxidizer.