Square Porthole（Black） Description: ² ABS anti-ageing and UV resistant ² 4mm thick tempered glass, water resistant seal ² Corrosion free synthetic and durable rubber seals ² Outer Length*Width: Approx. 400mm*200mm/15.75*7.87 Inch ² Inner Length*Width: Approx. 320*128mm/12.60*5.04 Inch Round Porthole(8 inch) Description: - 4mm(0.15inch) thickness tempered glass - Overall Outer Diameter: 21cm - Easy "click-in" construction - Casted and polished 316 stainless steel accessories - Strong ABS Molded Design, Anti-Aging, Anti-Corrosive, Ultraviolet Resistant. Specification: 1. Round shape porthole for Boat/Yacht/RV/Industry Cars 2. Corrosion free synthetic fittings and durable water-tight rubber seals 3. Temper Glass for Strength, Clarity, and Chemical Resistance 4. The two fitti.
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