4" OR 6" Opening Bronze Portlight / Porthole -- 1934 Eisenhower 50'This solid bronze opening port light is in great condition. The inside diameter is 6". The total outside diameter is 8 5 8". The dogs work as should. Screens will be as is, do not expect them to be intact as some are torn! Opens as it should. Will be removed off the wood and come with the backing plate as well as the hook to keep the port open. Also have this same exact port but in a 4" inside diameter.