This pod has a a useable face of 11.75"" x 7"", and maximum cut out area of 11"" x 6.125"". It features one high polished stainless steel clamp and can use upto 2 optional accessory pod. SP2S1 Rail Pod Features: Uncut Rail Pod, Stainless Steel Clamp, Clamp Fits 1"", 1.125"" and 1.25"" Rails, GORE-TEX Ventilation Vent, Water Tight Gasket, Use upto 2 Optional Accessory Pod, Compatible With following Electronics: Furuno: GP150D GP1670 GP1870 GP7800 Garmin: 527 547 620 640 720 721 740 741 70s Humminbird: 500 700 800 900 Lowrance: HDS-5 HDS-5M HDS-5X HDS-7 HDS-7M Raymarine: e7 e7D A50 A57D e9 c95 e95 A70 A70D Simrad: NSS7 Sitex: EC5 EC7 SNS 700 Standard Horizon: CPN700i CP190i CP390i CPF190i CPF390i"