7 Inch (3 3/8 Inch c-c) Neptune Door Knocker in Solid Brass (Several Finishes Available)Measures 5 1 2 Inches Wide and 7 Inches Tall Center to Center Mounting Distance of 3 3 8 Inch Weight is approximately 3. 25 lbs. Solid Brass Mounting Hardware Included Door knockers featuring Neptune, the Roman god of the sea, have a fascinating history rooted in maritime mythology and symbolism. These intricate knockers were popular in coastal regions and among seafaring communities, symbolizing protection, power, and a connection to the ocean.