*Pictured here in painted steel. Tank is now stainless steel and bracket is aluminum/stainless steel. The Sunbank 40 gallon solar water heater is a complete passive solar water heating system that is easy to install, efficient, and affordable. It includes the tank, evacuated tube collectors, and bracket. The SB-40G is SRCC certified which makes it eligible for the 26% federal tax credit as well as local incentives for solar water heaters. It is the only solar water heater of its type that has the SRCC certification. The SB-40G has a durable stainless steel inner tank and outer tank and a corrosion resistant aluminum and painted steel bracket. The system is heated by 15 evacuated tube heat pipe collectors and can be installed as a pre-heater to your existing system or a stand alone heater with the built in 110 volt heating element and controller accessory. The SB-40G has a standard 10 year warranty on the collectors and 1 year warranty on all other components of the system.