Rig Rite Vertical Transducer Plate - 18in x 8.5in Gray. Makes it easy to move install or adjust your transducer to get the maximum benefit from your fish locator. High-density polyethylene plate will not warp corrode or be affected by sunlight. Comes with stainless steel mounting hardware. Bottom of plate can be easily cut to any hull angle. Screw holes remain above water line. Features of Rig Rite Vertical Transducer Plate - 18in x 8.5in Dimensions: 18" x 8.5" Transducer Plate Style: Vertical Helps eliminate drilling permanent holes below the water line to prevent leakage Makes it easy to move install or adjust your transducer Screw holes remain above water line Package Contents: Rig Rite Vertical Transducer Plate - 18in x 8.5in Rig Rite 910: Vertical Transducer Plate - 18in x 8.5in Gray