Feature: 1. STAINLESS STEEL STRUCTURE: Made of marine grade stainless steel frame and hinges, polished to provide good touch, ensuring damage resistance and durability, suitable for harsh marine or outdoor environments. 2. UV RESISTANT GLASS: 6mm thick tempered glass filters out UV rays, allows light to enter the cabin, enhancing brightness, ensuring the overall sturdiness and safety of the window. 3. 180° INSIDE OPENING: Window features a rectangular design with an inward opening style. It comes with a fixed handle and up to 180° adjustable opening angle, providing flexibility to enjoy the scenic views along the journey. 4. FUNCTIONAL SCREEN: The window size is 345x150mm, with screen to provide a barrier for flying objects, making it an ideal addition to storage cabins, living spaces, lounges, bathrooms or any required locations for enhanced brightness or ventilation. 5. EASY INSTALLATION: Suitable for 26‑36mm thickness installation, good for boat, yacht, ship, and RV projects, providing solution for leaky, damaged, or unsatisfactory windows, enhancing the overall appearance. Specification: Item Type: Boat Porthole WindowMaterial: Stainless steel + tempered glass +ABS+ rubberOpen Mode: Internal open type, with stainless steel fixing clamp ring Window External Size: Approx. 345 x 150mm / 13.58 x 6in Installation Hole Size: Approx. 296 x 102mm/ 11.65 x 4.01in Suitable For Installation Thickness: Approx. 26-36mm/ 1.02-1.41in Application: Suitable for Boat, Yacht, Nautical, RV, can be used for your boat yacht RV retrofit and other projects, to provide a solution for your leaking, broken and unsatisfactory windows Installation Note: The window is an inward opening type, the glass face with the handle is the face installed in the cabin, and the fixing clamp ring is installed on the outside. . Package List: 1 x Window1 x Fixing Frame Note: 1. Installation is slightly difficult, it is recommended to find a professional engineer to assist in the installation to get the best shopping experience.2. Manual measurement please allow slight error.