Features: This marine porthole delivers superior weather resistance with ABS construction that prevents yellowing and cracking, features a quick installation design for effortless setup. Engineered for durability, it boasts 4mm temper safety glass for impacts resistance and polished 316 stainless steel hardware, alongside corrosions resistant synthetic fittings and a robust rubber seal for waterproof and moisture protections. Designed specifically for boat owners and campers enthusiasts, this round window serves as an ideal replacement or upgrade part for mainstream skylights on yachts and motorhomes. Perfectly suited for marine environments and adventures, it provides long lasting performances as a sealed skylights component on vessels and recreational vehicles expose to harsh outdoor conditions. Achieve peace of mind with this heavy duty, leak proof circular window solution that combines premium materials and secure sealing for upgrade to your marine or mobile living space. Specifications: Component: ABS + Glass Color:White,Black Outer Diameter:215mm/8.46'' (small), 265mm/10.43'' (large) Package Includes: 1Piece Boat Porthole note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.