Suburban SW Series Water Heater Element 520900 (120 V) With Gasket Superseded from part number 520789 Compatibility:   SW4/6/10/12/16 D, DE, DEL  SW6/10/12/16 DEM  SW6DE/DEM (Above Serial Number 115103837)  SW10DE/DEM (Above Serial Number 115101002) WITH GASKE... See More