This is a Buy It Now for a 1997 cast iron floor register made by "The Adams Company" of Dubuque Iowa. It has 3 pieces. The outer ring mounts to the floor. It is 15.5 inches in diameter. The inner ring spins to adjust the heat and the center circle is removable for servicing the vent. Center plate is 6 inches in diameter. It is heavy and strong. Beautiful register and is the only one like it on eBay. Shipping is free and I only ship to USA Mainland.