Air Conditioning Products LLC (ACP) is a world-class manufacturer of shutters, dampers, louvers, and other products for air movement equipment. ACP has been in continuous operation since 1947. Based in Romulus, Michigan, ACP proudly manufactures our products with union labor in our 100,000 square foot state of the art facility. We specialize in fulfilling strict requirements for quality and reliability while combining short lead times with the flexibility to handle orders of all sizes and quantities. We specialize in backdraft dampers, wall shutters, ceiling shutters, gable shutters, motorized dampers, stationary louvers and contract / private label manufacturing. Our products are used in industrial, commercial, residential and agricultural applications. Our broad customer base includes leading HVAC manufacturers, OEMs, national and regional distributors, manufacturer representatives, as well as industry-specific companies.