Aluminum Boat Round Hatch Porthole Window Tempered Glass 6 Sizes Marine Yacht Features: Anodized heavy-duty aluminum frames No sharp corners to snag lines or sails Spare parts available 6mm tempered smoke glass Quick acting, adjustable tie down dogs Heavy-duty 316L stainless steel support 6 overall sizes to choose from: 425mm,16.7 Inch 475mm,18.7 Inch 525mm,20.7 Inch 575mm,22.6 Inch 625mm,24.6 Inch 675mm,26.6 Inch Frame: Anodized Aluminum Glass: 6mm tempered glass, smoke color The listing price does not include any destination duties/taxes/custom fees/etc that will be due when the product arrives at destination countries/regions. It is the customer's responsibility to pay for all custom duty/taxes/custom fees if any.