HydroQuip 10-0120-K Laing E10 Circulation Pump with 4' Cord 3/4" Barb 120V - The E10 is a true variable speed circulator pump which modulates across the entire performance curve. It is designed with a highly efficient electronically commutated permanent magnet motor (ECM technology) for potable water recirculation systems. It includes a 4' cord.