R.W. Fernstrum & Company has over 75 years of expertise engineering and manufacturing heat exchangers for marine markets. Starting with the first factory assembled and tested keel cooler, Robert Fernstrum set the standard with the GRIDCOOLER® keel cooler. Today with standard unit variants numbering in the hundreds of thousands and a wide variety of customizations available, we can provide you with the most durable, efficient, and cost-effective keel cooler solution available. We are also the only American manufacturer of boxcoolers. Come to Stand E2 and learn about the advantages of our products and see why R.W. Fernstrum & Company is a global leader in marine heat transfer: GRIDCOOLER Keel Cooler: Exclusive Enhanced Tube 90/10 Copper-Nickel Laser Welded Technology.