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.
eBay