This low bathroom frame and toilet cistern has been specially designed to have a water saving flush for wall hung toilets. Each eco concealed toilet cistern can reduce the water consumption by up to 25% compared to a standard cistern. With a dual flush, this concealed cistern conserves water on the main flush, using only 4.5 litres instead of the normal 6 litres and the half flush still using the standard 3 litres. Being restricted in height this low toilet cistern is ideal for under windows and other height restricted areas."extremely reliable cisterns"