Grundfos UPS 15-58 FC — 59896341 3-Speed Circulator Pump for Heating and Cooling Hot Water System Choose the nine- or twelve-station

Choose the nine- or twelve-station Rain Dial-R model for additional zones

41-Gallon Capacity — extends pump cycles and reduces frequent starts for longer motor life

The dimensions and compatible sink models are different

That matters with the 2120 because its 220V input

Landscape zones that do not require local flow adjustment

Grundfos UPS 15-58 FC — 59896341 3-Speed Circulator Pump for Heating and Cooling Hot Water System Choose the nine- or twelve-stationGrundfos UPS 15 58 FC 59896341 Three Speed Cast Iron Circulator Brand: Grundfos SKU: 59896341 Product Overview The Grundfos UPS 15 58 FC model 59896341 is a three speed cast iron wet rotor circulator for compatible closed hydronic heating and cooling systems. Its selectable speeds allow the installer to match pump output more closely to the loop's calculated flow and head requirements, supporting system balancing across radiant floor, baseboard, fan