Feature: 1. Suitable Scenes: Tempered glass boat porthole has a rugged construction and stylish look, which has a wide range of applications and is suitable for ships, yachts, etc. 2. Waterproof Sealing Performance: The inner frame of the porthole is equipped with waterproof rubber rings, ensuring complete sealing and waterproof performance. This ensures that your boat's interior environment is not compromised even in harsh weather conditions during sea navigation. 3. Heavy Duty Aluminum Alloy Frame: The overall frame of the porthole is made of marine grade heavy duty aluminum alloy with a smoother white powder coated finish, seamlessly integrating with your boat. It provides a good touch and ensures long lasting oxidation prevention, even in outdoor environments. 4. Double Layer Outward Opening: The porthole window is designed with a double layer outward opening mechanism and comes with 5 304 stainless steel latches for secure fastening. This protects the window's stability while closed and prevents it from being affected by harsh marine conditions. It also includes brackets on the exterior, ensuring stability when the porthole is open. The window can be applied to the hull side panels, superstructures, and deck exterior wall. 5. Robust and Secure Construction: Boat porthole features a marine grade heavy duty aluminum alloy frame and transparent tempered glass, ensuring overall sturdiness and safety. It effectively resists harsh marine environments while blocking sound and heat, providing a comfortable environment. Specification: Item Type: Boat PortholeMaterial: Stainless steel + aluminum alloy + rubber + tempered glassWindow External Size: Diameter Approx. 395mm/15.6in Installation Thickness: Approx. 8-15mm/0.3-0.6in, Self tapping screws installation 10 pcs (not included) Screws installation hole diameter Approx. 15mm/0.6in Translucent Size: Approx. 250mm/9.8in Full Opening Size: Approx. 290mm/11.4in Installation Opening Size: Approx. 302mm/11.9in Deadlight: Heavy duty hinged cover to protect against seawater impact. Application: It is a round window with watertightness that is set in the ship's outboard side panels, superstructure and deckhouse perimeter wall, etc. It consists of a main window frame, a glass pressure plate, and a storming cover. Marine porthole with its glass and porthole cover (storming cover) structure is very strong, and should be able to effectively close and ensure watertight.Fitment:Suitable for ships, yachts, etc. wherever a porthole is required.. Package List: 1 x Boat Porthole Note: The positioning of the porthole shall comply with the international conventions, rules, classification society regulations and the relevant provisions of the competent authority of the ship's country of registry.1. If the ship needs to meet the requirement of stability of the broken compartment, the lower edges of the porthole window are located below the final waterline of the broken state and the outer side of the premises that will be submerged after the breakage, and the porthole window should be installed with non openable one.2. Only heavy or medium portholes with permanent storming covers shall be permitted on the outboard side of the vessel or on the first superstructure or deckhouse with access to the premises below the dry deck.3. There is a direct access to the closed first tier superstructure or dry deck below the premises of the second tier superstructure cabin, should be installed with a permanent storming cover of heavy or medium portholes