As a full-service wholesaler distributor, Masters Supply maintains locations in Kentucky, including one in Louisville. The company supplies a variety of products including pipe, valves, fittings, tools, pipe fabrication, air conditioning systems, cabinetry, appliances, fixtures and faucets. Founded in 1939 by Carl J. Zoeller as a service side of Zoller Pump, Masters Supply operates four fully-stocked warehouses. In 1997 the company became wholly-employee-owned.