Historical
ANSI/ASHRAE Standard 87.2-2009
In-Situ Method of Testing Propeller Fans for Reliability
Applies to propeller fans that are used in heating, ventilating, refrigerating, and air-conditioning equipment and that. are constructed of built-up or of monolithic materials, may include a slinger ring or hub, or both, and are direct or belt driven.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]