This great little unit comes selfcontained and ready to mount in your van, complete with mounting bracket, automatic softener, and brine tank. The brine tank is small, but has all the professional features of a full-size unit - using only one square foot of floor space, this unit is a great space saver. Easy to use! Once a week (8,000 may vary according to water hardness and usage) simply hook up to water, twist the automatic timer, then go relax - everything is automatic! You will have soft water again in less than one hour.