Heat Diverter for the Hot BoxHeat Diverters for the Humphrey's Hot Box! Pick between 1 8" or 1 4" steel. These heat diverters sit right above the firebox on a built in rail as seen in pictures. Why add a heat diverter? Adding a heat diverter to your Hot Box adds some separation from your firebox to your cook chamber, which some cooks like for a few reasons! Heat diverters also redirect the airflow in your Hot Box and can promote more even heat distribution! They also can act as a