Water Heater Anode Rod; Item Anode Rod; Type Screw-In; Size 29" Length; Material Aluminum; Used On Item Water Heater; Used On Model/Brand GCV 50 YBRT, GS6 50 YBRT, GVR 50 YOCT, GS6 50 YOCT, GCB 40 BRBT, GS6 40 BRBT, GCRT 40 RCT, GS6 40 RCT, GCR 40 BCT, GS6 40 BCT, BTL 120, 154, 180, 198, 199, 250, 275, 310, 366, 400; Mid Line Size 3/4"