OE Number MJ-1-DP Specification MJ-1-DP Jack Plate 4'' Setback The jack plate extends 4" off transom. Engine mounting surface is 11-1/2" x 10", 4" Setback and 3" Vertical. Width of transom mounting flanges is 17". Max weight capacity: 150 lbs. Features: 1. Application: Designed for clamp-on outboard motors up to 35 HP. Suitable for skiffs, aluminum boats, and inflatables. 2. Wooden Block Included: Same as MJ-1-DP Jack Plate, Wooden Block Model # WOOD0002. Jack plate comes with pre-cut and pre-grooved wood block for a perfect fit. Ensure more firm and reliable installation of the motor. 3. Function: Extends 4" off transom. Small boat that made for short shaft outboard engine equipped with a long shaft engine which results in not optimal performance and handling. This jack plate is designed to firmly attach to the transom and provides a higher mounting position for the engine. 4. Benefits: Improves performance and handling of smaller or lighter boats. Allows long shaft motors mount to shorter shaft transom boats