hertz power the rotation speed is diminished to 1450 rpm the fan is rotated by a 560 w or 3 4 horsepower motor 83 illustrated from the rear in fig1 baffle 68 illustrated in fig9 aids the fan in creating a uniform flow of air the baffle 68 measures approximately 54 cm u00d7 60 cm has a hole 76 in its center and is mounted at the rear of the housing immediately in front of the fan the baffle directs incoming air through the central aperture 76 to the fan from the cooking zone and directs the air flow from the fan outwardly and around the periphery of the baffle thus creating a uniform air flow pattern throughout the cooking area the air flows in a cyclical pattern from the center of the oven into the fan means past the heating means 72 out around the baffle along the periphery of the inner walls and back to the center of the oven the airflow within the oven over the racks of chicken flows at 800 to 1100 fpm further illustrated in fig1 is an electric heating element 72 which provides the heat for both cooking of the meat product and for pyrolytic self cleaning it is to be understood however that gas or lpg liquid propane gas burners can be substituted for the electric element where electric heating elements are used there are preferably 6 calrod heating elements each rated at 1 83 kw the heating elements are disposed in rectangular configuration around the cooking zone fan between the baffle and inner rear wall.