Upgrade your boat, yacht, or RV with this sturdy oval portlight window! It's not just a window – it's a sleek, functional addition that lets more light into your cabin and gives you a great view of the outdoors. Measuring about 18.5 x 8.3 inches, this portlight is made from tough ABS and tempered glass, with a stainless steel frame that's built to withstand the elements. It opens a full 180 degrees, so you can catch the breeze just right, and it locks securely to stay put when you're on the move. Plus, it's completely sealed and waterproof, so no worries about leaks during rough weather. The installation cut-out size is roughly 15.9 x 5.9 inches, and it fits walls or panels between 0.39 and 1.57 inches thick. It comes with a fixed outer frame and a screen to keep bugs out. Perfect for adding ventilation and brightness to cabins, galleys, or sleeping areas. Just a heads-up – for the best results, we recommend getting a pro to help with installation. Get ready to enjoy the journey with a clearer, brighter view!