Boat Porthole,4mm Marine Boat Yacht Window Rectangle Opening 8" Portlight Porthole Replacement Anti Ultraviolet Marine Port Hole Window,for Boats, Yachts, Rvs 400x200mm

【Build to Last】:oat Porthole is made of high-class ABS, rubber, and tempered glass, making this product with high strength, high reliability, impact resistance, and abrasion resistance. 【Safe and Comfortable】:This window keeps the interior temperature comfortable and prevents rainwater from running into the car. It opens and closes at a maximum angle of 180°, which is great for letting you breathe in fresh air from outside. 【Wide Adaptability】:It is suitable for walls with a thickness of 38-42mm, so most RVs, boats, yachts, etc. can be fitted with this product. 【Excellent Sealing Performance】:The double-layer rubber seal provides better sealing performance for the product and prevents water from entering the room when the window is closed on rainy days. 【Thoughtful Design】:The two star-shaped knobs are not only easy to grip, but also easy to lock or unlock so you can quickly open or close the window. The clear glass provides you with a good view,you close the window, you can see the scenery outside.