This is a current production aluminum porthole mirror copied from an actual porthole. It measures 16" in diameter with a 10" diameter mirror. It is 4 1/4" tall to the top of the locking dogs. Weight is 7 lbs. Some of the pictures have reflections in the mirror causing distortions. There are 4 mounting holes accessible by opening the top and four mounting screws are included. This is one of the most authentic looking porthole mirrors I have seen.