MIL-PRF-19004B, PERFORMANCE SPECIFICATION: FANS, CENTRIFUGAL, VENTILATION, NAVAL SHIPBOARD (25 MAY 2001)., [SUPERSEDING MIL-F-19004A]

MIL-PRF-19004B, PERFORMANCE SPECIFICATION: FANS, CENTRIFUGAL, VENTILATION, NAVAL SHIPBOARD (25 MAY 2001)., [SUPERSEDING MIL-F-19004A]., This specification covers centrifugal fans for use in Naval shipboard heating, ventilating, and air conditioning systems.