RSD is the largest independently owned refrigeration parts and equipment wholesaler in the western United States. Proudly serving the west since 1907. Our RSD Series Counter Flow Towers can be made from Aluminum, Galvanized or Stainless Steel, making the entire tower virtually non-corrosive. RSD has 79 offices located in the states of Alaska, Arizona, California, Colorado, Idaho, Montana, Nevada, Oregon, Utah, and Washington. Contact us today to learn more about our line of cooling towers and other products.