Air Movement and Control Association (AMCA) International Inc. has released AMCA Publication 511-21 (Rev. 12-22), Certified Ratings Program Product Rating Manual for Air Control Devices.
Superseding AMCA Publication 511-21, AMCA Publication 511-21 (Rev. 12-22) outlines technical procedures and the proper presentation of data for the certification of air-control devices through the AMCA certified ratings program. It is to be used in conjunction with AMCA Publication 11-22, Certified Ratings Program Operating Manual.