Porthole Window Glass Aluminum Chrome 11 Inch:Aluminium Porthole Port Window Ship Boat Port Hole Round Mirror Home Wall Decor. Material Aluminium & Glass Finish.Aluminum Chrome Finish Ship Porthole Wall Mirror The Porthole Mirror that can be Loosened to Allow you to Swing Open the Porthole. Mounting Screw Holes are Located & Hidden Behind the Opening Glass Port Section. The Mirror Frame Has Realistic Rivets and a Chrome Finish.