Bennett Trim Tabs x 9 Standard Trim Plane Assembly 30. Each trim plane assembly includes a trim plane backing plate and hinge for one side of the boat. Specifications for Bennett Trim Tabs 30 x 9 Standard Trim Plane Assembly: Manufacturer: Bennett Trim Tabs Color: Black Package Contents: Bennett Trim Tabs 30 x 9 Standard Trim Plane Assembly Bennett Trim Tabs TPA309: x 9 Standard Trim Plane Assembly 30