professional oil heater 1, fin size: 150x580mm 2, we can do 7fins, 9fins, 11fins and 13fins. 3, power: 1500W-2500W professional oil heater specification:1, 220V~240V, 50Hz~60Hz2, large heating surface and radiation3, adjustable thermostat control4, triple overheat protection system5, indicator lights6, pressure tested safety7, smooth castors for easy movement8, with cord storage9, fin size: 150* ...