HydroPlane Plates - 8" x 7.5" The HydroPlane system features dynamic hinge technology that reacts to water pressure and boat speed to produce a smoother ride and better handling. Thermo-molded composite construction provides superior strength and resilience in any water conditions. The autonomous trim plates become an extension of the boat&';s running surface and require no external activation. For overall stability, faster time to plane, and elimination of common problems like porpoising and chine walking, HydroPlane provides the port-to-starboard balance that hydrofoils cannot.Features: No maintenance No pilot interface Faster time to plane Uses hydrodynamic lift Up to 50% more effective than Hydrofoils Creates balance Reduces fuel consumption Technical Specifications: Trim Tab Size (L x W) - 7.5" x 8.25" Boat Length - Under 16&'; Trim Tab Material - Polypropylene with Glass Fill In the Box: Two (2) plates/tabs Mounting hardware Instruction manual *Sold as a Pair Specifications: Actuator Type: None Construction: Polypropylene Box Dimensions: 3"H x 10"W x 10"L WT: 1.55 lbs UPC: 698690807506 Quick Guide (pdf)