Description: - 4mm (0.15 inch) thick tempered glass - Overall outside diameter: 10.4 inch / 265 mm - Easy click-in construction - Cast and polished 316 stainless steel fittings - Solid ABS molded design, anti-aging, anti-corrosion, ultraviolet resistant. Specification: - Round shape porthole for boat / yacht / RV / industry cars - Corrosion-free synthetic fittings and waterproof and durable rubber seals - Tempered glass for strength, clarity and chemical resistance - Both fittings can be loosened to allow you to open the porthole - Easy to install, pre-drilled countersunk mounting holes (screws not included) - Opening diameter with open window: approx. 7 3/4 inch / 197 mm Fitment: 1 Piece Porthole Note: 1.The actual color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. of your monitor and light brightness. 2.Please allow slight deviation for the measurement data. 3.Please allow