Electric oven having convection cover formed with sub-outlets

An electric oven having a convection heater and a convection cover. The convection cover including a main outlet located at or near the periphery of the convection cover, and a sub-outlet, more centrally located near the convection heater relative to the main outlet. Together, the main outlet and the sub-outlet allow the heated air to be uniformly circulated throughout the cooking chamber and to be evenly transferred to food irrespective of the position of the food in the cooking chamber. Uniform air circulation in the cooking chamber will result in more favorable cooking results.