Aluminum Square Deck Hatch Window With Tempered Glass For Marine Boat 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 Standard or super thin trim ring is supplied. Overall Size( Inch）Overall Size(mm） Cutout Size( Inch ) Cutout Size( mm)16.7" x 16.7" 425x425mm 14.2" x 14.2" 360x360mm18.7" x 18.7" 475x475mm 16.1" x 16.1" 410x410mm20.7" x 20.7" 525x525mm 18.1" x 18.1" 460x460mm22.6" x 22.6" 575x575mm 20" x 20" 510x510mm24.6" x 24.6" 625x625mm 22" x 22" 560x560mm26.6" x 26.6" 675x675mm 24" x 24" 610x610mmCorner Radius: R45 Frame: Anodized Aluminum Glass: tempered glass, smoke color,6mm thick 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. All shipping will be by China Post EMS express, FedEx express or DHL express economy and it will take about 7-10 working days to deliver to your address.