This Lochinvar Anode Rod is a crucial component designed to protect your water heater from corrosion. Made from magnesium, it measures 3/4 inches in diameter and 35 inches in length. The rod works by attracting corrosive elements present in the water, thereby preventing them from damaging the water heater tank. It's designed for easy installation and is compatible with various Lochinvar water heater models. Regular inspection and replacement of this anode rod can significantly extend the lifespan of your water heater.