It centralizes all drains (shower, sinks, kitchens, toilets etc.)rnto avoid bores in the hull. Universal model supplied withoutrnpump and automatic floar. It can be fitted with pumps: Rule/rnJabsco/360/800/1000 GPH, Attwood V625/V750/V900, Europumprn16.813.60, TMC 600GPH/500GPH/1000GPH, Seaworld 750GPHrnand floats Rule 35/35F, Attwood 4202, Seawoorld 40812.