Feature: 1. Robust Aluminum Alloy Frame: The hatch window features a heavy duty aluminum alloy frame, the anodized surface is polished to a smooth finish. This ensures excellent rust resistance and durability, making it impervious to harsh marine or outdoor environments. 2. Sturdy and Safe Tempered Glass: The translucent portion of the window is constructed with 6mm thick smoked tempered glass, ensuring strength and safety. The smoked glass filters out harmful UV rays while allowing natural light to illuminate the cabin, enhancing brightness. It can also be utilized as a ventilation window. 3. Waterproof and Shockproof Design: The window frame is equipped with waterproof rubber seals, providing complete sealing and protection against water intrusion when the window is closed. The seals also offer shock absorption, enabling the window to withstand rough weather conditions. 4. Stainless Steel Support and Hinge: The window assembly includes support rods and hinges made of 316 stainless steel, ensuring long durability. The window opens externally, allowing for a fully customizable opening angle from 0 to 90 degrees and can be securely fixed at any desired angle. 5. Various Applications: Boat porthole window is suitable for resolving leakage, damage, or dissatisfaction with existing windows. It is ideal for boats, yachts, ships, RVs, and can be used as a skylight, escape window, storage compartment window, roof window, or for any retrofitting project. Specification: Item Type: Portlight Window Material: Aluminum alloy + tempered glass + ABS + rubber + 316 stainless steel Opening And Closing Mode: Push Out Type, With Stainless Steel Support Rod And Locking Handle Maximum Opening Angle: 90 Degrees Window External Size: Approx. 425 x 625mm / 17 x 25in Installation Opening Size: Approx. 360 x 560mm / 14.4 x 22.4in, R45 (Please Allow 5mm Error) Suitable For Installation Thickness: Approx. 25-50mm / 1-2in Applicable: For Boat, Yacht, Nautical, RV, Can Be Used For Your Boat Yacht Caravan Conversion Retrofitting And Other Projects, Provides A Solution For Your Leaky, Broken And Unsatisfactory Windows. Package List: 1 x Portlight Window Note: 1. Installation is a bit difficult, it is recommended to seek assistance from a professional engineer for the best shopping experience. 2. We will provide packaging with high hardness and all round protection. When the goods are delivered to you, they will be in a undamaged condition. Please be careful to avoid collisions during unpacking. 3. Please measure the dimensions before purchase to ensure it meets your needs.