4,6,8 GPH Barebones DC Units. Includes a 12 volt DC driven Wanner pump with relief valve, 12 volt DC Booster Pump, 2.5" x 14" membrane and vessel, pressure and flow controls, 10' high pressure hose with field installable fittings, 25 and 5 micron filter housings, 3 ea of the 25 and 5 micron cartridges, permeate check valve, Backwash/Flush Manifold, TDS Tester, and Operation and Installation Manual, available 24/7 via phone operation and installation questions. 4 GPH Unit draws less than 30 amps. 6 GPH Unit Draws 35 amps. 8 GPH Unit Draws 45 amps.