Waterco 200379 Multicyclone 16 Plus with 75 sqft Cartridge Filter. 2” PVC Connections. The MultiCyclone Ultra combines centrifugal and cartridge filtration into one streamline filter housing. This creates an ultra compact filtration system that can be vertically installed on any swimming pool pump. Dual stage filtration As incoming water enters the housing it is routed through multiple hydrocyclones, generating a strong centrifugal effect. Approximately 80% of the incoming debris is spiralled down to the clear sediment housing on the bottom. The outgoing water is then polished by the 75 sqft cartridge filter, producing crystal clear water with very little maintenance. 2" PVC plumbing ports. Suitable to handle pools up to 26,000 gallons.