Up for bid is a Bomar rectangular aluminum porthole. The viewing area is 12 x 5 inches. The outside frame is 15 3/8 by 8 3/8 inches. The inside frame measures 15 3/4 by 8 3/4 inches. The overall condition is good. There is no corrosion because the boat that it was removed from was sailed in fresh water only. Check out all of the photos and ask questions if you need more information. Check out my other auctions for more sailboat hardware.