Vision Series Mounting Plate for Raymarine T300 & T400 Thermal Cameras and Flir M-Series- Year 2017 and NewerWith Edson's Vision Series Mounting System once you have selected the mount you want to install your electronics to you must select the corresponding plate that has the correct bolt pattern for your electronics. Edson's 68600 Vision Series Mounting Plate is designed for Year 2017 and NEWER Raymarine T300 & T400 fixed Mount Pan/Tilt Thermal Cameras and FLIR M-Series (M-324XP, M-625XP, M-324L, M-625L, M-612L, M-618CS, M-324S, M-324CS, M-625S, M-625CS, M-617CS, M132, M232).  Mounting Plates are required to complete an Edson Vision Series Mounting System. Order Base mount separately. *7.8-inch Diameter with NO WING MOUNT CAPABILITIES