Revised standard ANSI/AMCA 210-99, Laboratory Methods of Testing Fans for Aerodynamic Performance Rating, establishes uniform methods for laboratory testing of fans and other air moving devices to determine aerodynamic performance for rating or guarantee purposes in terms of airflow rate, pressure, power, air density, speed of rotation, and efficiency. It updates and replaces ANSI/AMCA 210-85, ANSI/ASHRAE 51-85, Laboratory Methods of Testing Fans for Rating. To order a copy of the standard, contact the Air Movement and Control Association International (AMCA) at 847-394-0150; 847-253-0088 (fax);