... temperature achieved within 10 minutes 3.600w-1800w oil-filled electric heater R500-85C 1.central distance: 500mm 2. Dimension :580*80 ... Aluminium ,shell 320 oil ,italy imported heating elements surface electrophoresis, electric static spraying and then roast twice deliery time 15days warranty ... . Lontek radiator welcome all of youelectric aluminium radiator oil-filled electric heater