A-A-50032B, COMMERCIAL ITEM DESCRIPTION: FANS, VENTILATING, PROPELLER (10 SEP 1992)

A-A-50032B, COMMERCIAL ITEM DESCRIPTION: FANS, VENTILATING, PROPELLER (10 SEP 1992)., This commercial item description covers propeller ventilating fans for non-hazardous and hazardous locations in the following types, classes, styles, and sizes as specified.