The grey water tank is designed to be used as a collection tank for waste water from showers, sinks, dishwashing machines, etc. with 19 mm, 25 mm, and 38 mm inlet ports, and 19 mm and 25 mm outlet ports. The tank includes an Ultima Switch for automatic operation and is easy to connect to any 12V/24V pump up to 20 amp. The tank is prepared for Viking Power 16 with pre-drilled holes for the pump.