Rheem 7" x 44.375" Magnesium Anode Rod

The anode rod prevents tank corrosion. It acts as a sacrificial material to protect the exposed steel within the water heater tank. Anodic Material : Magnesium Total Length (in.) : 44-3/8 Rod Diameter (in.) : 0.750 Hex Head Size (in.) : 1-1/16 Thread Size - NPT (in.) : 3/4 Resistored: No