CSI - Oil Immersion Heaters For Oil Tankers Made out of Steel Brazed to M. S. Flange provided with Thermostat Pocket. Oil Heaters are used for Fuel oil heating, oil circulating, oil jacketting etc.Note: To be fully immersed in oil before putting in operation. Cat No. No Watts Volts Flanges Depth Price each Inches OH 103 2000 230 2.1/2″ 17.6″ OH 104 3000 230 2.1/2″ 17.6″ OH 105 4000 230 2.1/2″ 23″ OH 106 5000 230 2.1/2″ 24″ 107 6000 230 2.1/2″ 24″ OH 108 9000 230 2.1/2″ 26″ OH 109 1200 230 2.1/2″ 30.4″