Lenco 15050-101 High Performance 21 x 14 Electric Trim Tab Kit without Switch This trim tab kit is designed for boats with multiple engines and limited transom space. The contoured blades will help decrease cavitation for a smoother ride. The trim tabs are made from 12-gauge 304 stainless steel that has been electro-polished for extreme corrosion resistance. This kit is intended for boats between 24 - 52 in length. These trim tabs are 21 deep by 14 wide. Trim switch sold separately Trim Tab Kit