The American Made Grills Drop-In Infrared Sear Burner (IRB-ATS) is a ceramic infrared drop-in burner that replaces one main burner position in a compatible Atlas series grill, adding a dedicated high-heat searing zone capable of reaching 1000°F. At 16,500 BTU, the ceramic element converts gas combustion into direct radiant heat rather than heating surrounding air — producing faster surface caramelization and a Maillard crust that standard convection burners cannot match at the same BTU output. Installing this burner replaces one standard main burner position: your grill gains a sear zone but has one fewer standard convection burner. Compatible with: Atlas series grills (ATS36-B, ATS42-B — built-in and freestanding) Not compatible with Alturi, Estate, or Encore/Muscle grills..