Viron® International Corporations VI-A-TROL® Dampers are AMCA (Air Movement and Control Association) certified to bear the AMCA label. The VI-A-TROL® dampers are control dampers tested to the rigorous AMCA tests. The VI-A-TROL® dampers are AMCA certified to 30” w.g. Round and Rectangular dampers are available. The VI-A-TROL® dampers are constructed per NBS PS15-69 standards along with meeting ASTM D2584-68, ASTM D4385-84a and ASTM D3982-92 Specifications. Consult the brochure for additional information or contact Viron® Technical Service.
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