Heater Eemax Mini Tank 120V 4 Gallon, Compact space saving design fits under most sinks, Saves energy by eliminating long runs of pipe and long waits for hot water, Tank is glass lined to reduce corrosion, Factory installed temperature and pressure relief valve, 2, 5 and 4 gallon models include a corded plug for a standard outlet and can be wall or floor mounted, 6 gallon model must be hard wired and floor mounted, SKU: HMREX389