Reduce the risk of trim tab damage from fork lifts, trailers and dry storage racks, avoid unnecessary marine growth on actuating cylinders, and relieve hydraulic pressure when trim tabs are not in use. The compact device is easily installed behind the instrument panel, out of sight. Operates with any Bennett helm control or Boat Leveler Insta-Trim system. Command module measures 2 1/2 x 2 x 1 3/8L. 5 year warranty.