18" Transom Clamp

 * Weighs 13 lbs.
 * For smaller boats with
    transom heights of 22" and
    24".
 * Screws are spaced 6" and
    18" from throat.

24" Transom Clamp

 * Weighs 18 lbs.
 * For smaller boats with
    transom heights of 24" and
    above.
 * Screws are spaced 7",
    15 1/5" and 24" from throat.

36" Transom Clamp

 * Weighs 36 lbs.
 * For the center of larger boat
    transoms and for house boat
    construction.
 * Screws are spaced 7",
    21 4/3" and 36 1/4" from
    throat.