Flat Mount Bracket f/StructureScan 3D Ducer & TotalScan Ducer3D Transducer Flush Mount Bracket is used to flush mount the transducer under the boats Hull. Suits TotalScan and 3D Transom Transducers - cis2:mm5mnJlm -Specifications: Type: Misc; Box Dimensions: 1"H x 6"W x 12"L WT: 0.7 lbs; UPC: 9420024145944;