ATCO Rubber Products is a manufacturer of flexible ducts used for heating, ventilating and air conditioning systems for residential and commercial applications. ATCO s products include insulated and uninsulated ducts, British standard heavy-duty ducts, aluminum and special purpose ducts. The company adheres to strict national and international standards, including Underwriter Laboratories, British Standard 476 and AS1668. The firm has several subsidiaries, including Air Connections in the Netherlands and ATCO Master-Fit Sheet Metal. Established in 1961, ATCO has grown from a relatively small rubber products-engineering firm to a multimillion-dollar international corporation with 17 worldwide manufacturing sites. The company is headquartered in Fort Worth, Texas, and maintains operations in Glendale, Ariz.