Read CMC Marine's Warranty Policy Here Transom Spacer for Pontoon Boat (Item #13032) The transom on some pontoon boats are inset with an aluminum lip along the sides. To conveniently mount the CMC PT-130 or ATLAS THT-130C to this type transom, this transom spacer is available. The transom spacers are 1 inch thick allowing you to mount the PT-130 without interference with the 1/2” to 3/4” lip around the transom on some pontoon boats. OEM/Bulk Product Name Distributor Packaged 13032 Pontoon Transom Spacers for Tilt & Trim (PT-130,THT-130C)