Get galvanized for a reliable, top-quality rack that can withstand the outdoors, coolers, and chemical applications. The long-lasting, resilient materials will save you time and money in replacement costs. These cantilever towers are set into the bases and hold the arms of the unit. Available in single or double sided, which allows for 2 rows of storage using the same tower. Buy two for a stand-alone unit, or one for an add-on unit.