Publication 511, Certified Ratings Program for Air Control Devices from the Air Movement and Control Association International, Inc. (AMCA) explains the association's ratings program and its applications to air control devices. The Certified Ratings Program is said to provide buyers, specifiers, and users assurance that the published ratings of air movement and air control devices are reliable and accurate. The program is intended to assure manufacturers that competitive ratings are based on standard test methods and procedures are subject to check by an impartial authority.
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