This 6 Stage NASA Based Water Filtration System is for high volume businesses, such as restaurants, etc. It comes complete with mounting brackets, pressure gauges, 6 housings, 1-sediment filter, 2 micro-chemical filters, and 3-DOUBLE PLEATED NASA Based water filters with silver impregnated carbon blocks. This system will effectively purify 2,200,000 gallons of water before the NASA filters need to be replaced.