This Gledhill Stainless Lite Plus Indirect Unvented Hot Water Storage Cylinder has a tank capacity of 178L and is manufactured with stainless steel tank lining material. It operates using a boiler and corded electric power source and has a water connection location on the side. The heating system used is a storage tank and it has an energy efficiency rating of B. Made in the United Kingdom, it comes with a lifetime manufacturer warranty and is ideal for indoor mounting. This product is a standard water heater, perfect for anyone in need of a reliable and efficient hot water storage cylinder.