Our Round Shape Porthole, a perfect combination of functionality and decorative charm, suitable for an array of applications from marine to home use. Key Features: Durable Material: The porthole is made with strong ABS plastic, known for its anti-aging, anti-corrosive properties. Enhanced Glass Quality: It features a 4mm thick tempered glass that offers strength and clarity. Premium Fittings: The porthole includes cast and polished 316 stainless steel accessories and corrosion-free synthetic fittings, ensuring longevity and reliability. Effective Sealing: It is equipped with durable, water-tight rubber seals, providing excellent protection against water ingress. Dimensions and Installation: The overall diameter of the porthole is 10-1/2 inches, with a glass window diameter of 6-7/8 inches. It is designed for easy installation, with pre-drilled countersunk fastening holes (screws not included). Additional Specifications: Opening Diameter with Open Window: 7 3/4 inches Convenience: The porthole is designed for easy opening, with two fittings that can be loosened to swing open the window. This Round Shape Porthole is not just a functional piece of marine equipment but also a versatile decorative item that can enhance the aesthetic of various settings. Its robust construction and ease of installation make it a preferred choice for a wide range of applications.