FED-STD-50H, FEDERAL STANDARD: FAN, CIRCULATING, BRACKET AND FAN CIRCULATING, DESK (RIGID BLADES) (31 MAR 1976)

FED-STD-50H, FEDERAL STANDARD: FAN, CIRCULATING, BRACKET AND FAN CIRCULATING, DESK (RIGID BLADES) (31 MAR 1976)., This standard establishes sizes for desk and bracket-type fans with one type of guard and a high velocity, multi-purpose fan as the standard sizes for the use of all Federal agencies, to achieve the highest degree of standardization.