An oven is used for cooking food and comprises an enclosure having a floor, a ceiling, a back wall, and a pair of side walls. A heating element is disposed on the back wall at a distance from the floor and the ceiling and a shield is disposed between the back wall and the heating element. The shield is configured to receive radiant heat from the heating element and to re-radiate lower frequency radiant heat towards the food. The enclosure may further comprise a door and the side walls may be double paneled. A radial fan is coupled to one of the side walls to pull hot air from inside the enclosure and cooler air from outside the enclosure. The hot and cool air are mixed within a space defined by the double paneled side wall and is directed out over the exterior of the door to cool the door.