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“The acquisition of California Economizer and its Zonex Systems brings together the two oldest manufacturers of zoning dampers and zone-control systems,” said Dick Foster, the president of Zonefirst and its parent company, Trolex Corp.
ANSI/AMCA Standard 540-23 establishes uniform methods of laboratory testing the ability of a louver to remain unbreached by flying debris during a windstorm.
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 (CRP).
Used in general ventilation and air-conditioning systems, air-control devices include louvers, dampers, gravity ventilators, round spiral duct, and transverse duct connections.