Cooking device gas manifold assembly having support, gas supply and burner assemblies. The support assembly has a burner bracket, shelf and support beam which is mounted to and cantilevered from a securing plate mounted perpendicularly to a support base. The gas supply assembly has a gas pipe that is threaded through the interior of the support beam and connected to a distribution pipe at one end and extending through the securing plate at another end. The burner assembly has a pipe burner supported by the burner bracket and a radiant deflector supported by the shelf.