Replicated from an actual antique style ships porthole, this item is made lightweight, strong fiberglass resin with a hand-rubbed verde bronze finish. Measures approx. 16.25″Dia x 4″W with a window viewing area of 11.5″Dia. Can be placed indoors or outdoors, however, if placed outdoors, the bronze finish will patina like a real bronze piece. . Features big bolts, a thick frame, and exquisite detailing. Mounts easily to the wall using the provided screw hole in the back (mounting hardware not included). Mount this item in your bar, bathroom, beach house, and much more!