Suburban Hot Water System 20.3L LPG/240V with12V IgnitionSuburban uses a copolymer insulation jacket specially moulded to fit the tank resulting in faster recovery, meaning more hot water and fewer cool water cycles. Suburban uses a porcelain lined, steel water heater tank with an anode rod to absorb the electrolytic action just like your water heater at home Suburban Water Heaters carry the following approvals: WaterMark Certification; Australia and New Zealand; Gas Safety Certification Regulatory