The oven (1) which is the object of the present invention, comprises an outer cabinet (2) preferably in a rectangular prism shape, a cooking chamber (3) located inside this outer cabinet with spacing between, fan(s) (9) moving the air inside the oven, heater(s) (10) that heat the air, a fan cladding (11) located at the back of the cooking chamber (3) that directs the air moved by the fan, a side wall (4) enabling the transfer of the air moved by the fan and received from the inlet, towards the middle and the back sections of the cooking chamber at required temperature and pressure rates.