Replaces SU520789. Approx. 11"L.(REPLACES: SU520789).Screw-In with Gasket. Approx. 11"L. This part is associated with the following Model Series: SW12, SW16. Also associated with SW6 DE/DEM (ABOVE Serial No. 115103837); and SW10 DE/DEM (ABOVE Serial No. 115101002).Dimensions: 10-5/16"L overall and 9-1/2"L from back of flange. Approx 1-1/4" Diameter at threads and 1-1/2" at flange or nut. | Suburban Element & Gasket, Heating, Screw-In, 120 VAC, 1440 Watt, Dsi, SW Series, Water Heater