RDC-850 / RDC-1600 Spare SP3 pinwheel pump
Please note that SP3 for RDC-850 and RDC-1600 is only suitable for RDC-850 and RDC-1600 (pump inside the skimmer chamber model). and it can not install to another skimmer diue the the skimmer and pump connecting difference.
Also please note that the SP3 standard pump is not suitable for installing to the RDC-850 and RDC-1600 modle too(pump inside the skimmer chamber model)