Boat and RV owners, this Galamarine aluminum deck hatch gives you durable, weatherproof access that looks professional and lasts for years. The heavy-duty anodized aluminum frame resists corrosion from saltwater and the elements, while the 0.24-inch (6mm) thick smoke-grey tempered glass top provides both visibility and safety. With 316 stainless steel supports and durable hinges, this hatch can handle the demanding marine environment without rusting or failing. The overall size is 24.6x24.6 inches, but the crucial cut-out size is 22x22 inches with 1.8-inch corner radius - so measure your opening carefully before ordering! This hatch is perfect for installing on boat decks, cabin tops, or RV roofs where you need access to storage areas, mechanical spaces, or just want to add natural light below deck. The smoke-grey tint helps reduce glare and heat while still letting in plenty of light. Installation is straightforward if you're comfortable with cutting openings and sealing properly. Much better quality than cheap plastic hatches that crack and leak after one season. Whether you're replacing a worn-out hatch or adding new access points to your vessel, this professional-grade hatch provides the durability and weather resistance that serious boaters and RVers demand.