1、The product has simple structure, high mechanical strength, high thermal efficiency, safety and reliability, easy installation, and long service life. 2、Wide applicability, widely used in various saltpeter tanks, water tanks, oil tanks, acid‑base tanks, fusible metal melting furnaces, etc. 3、The service life of stainless steel electric heating tubes is very long. Generally, the service life is over 10,000 hours. 4、The water heater is equipped with a silicon sealing gasket, which is elastic and waterproof. 5、With a protective cover, electric pool heater can protect the heating element from direct contact with people or animals. Item Type: Portable Water Heater Material: Stainless Steel / Brass / Silicone Uses: Widely Used in Various Heating Situations Working Voltage: Ac 220/380v Product Length (Excluding Base Connection Column): 3000w: Approx.220mm / 8.7in 4500w: Approx.240mm / 9.4in 6000w: Approx.270mm / 10.6in 9000w: Approx.320mm / 12.6in 12000w: Approx.350mm / 13.8in 1 x Heating Tube 1 x Protective Cover