The Rinnai Hotflo Electric Hot Water System is a durable and versatile tank for small to medium households. This unit comes dual handed, allowing for flexibility during installation & can also be installed indoors or outdoors. It also includes a pressure temperature relief valve for added safety and greater thermostatic control. Manufactured in Australia to withstand Australia's harshest conditions, this tank is made to last.3.6k - W 160L capacity, suitable for hard water areas - Vitreous enamel steel lined tank - Inbuilt hard water anode protection - Dual handed - Pressure temperature relief valve included - Internal or external installation