6,000# to 20,000# Vertical Boat Lifts The smaller vertical lifts are truly the backbone of the industry. At I.M.M. we make every effort to build the highest quality possible, that will insure you of many years of excellent trouble free service. I.M.M builds the lifts with no structural welds. This is the proper way to design and build an aluminum lift (see page 16 ). The photos on this page represent a small fraction of the thousands of I.M.M. Vertical Lifts that are out there. The first I.M.M. aluminum lift we built nearly 25 years ago is still in service.