Create a very distinctive nautical look anywhere with this beautiful solid brass porthole mirror. The latches open, so you can also use these as creative hatches in doors, cupboards or even interior walls. The outside diameter of this porthole is 21" and the visible diameter of the mirror is 15". There are three mounting holes for you to secure it in the location of your choice. One behind the hinge and one behind each of the dogs so they are hidden once mounted. (The three required screws are not included with the porthole). This porthole mirror makes the perfect addition to your nautical home decor. It could help turn that special area in your nautical home or office into your own beach house or coastal themed area. They also make a great nautical gifts, a beautiful piece of coastal decor, a nice piece of nautical wall art as well as being a great addition to your nautical decoration.