4140-01-583-1101 (VCD-23 10X10IN/MS4120F-1204)
4140-01-583-1101 is equivalent to manufacture part number VCD-23 10X10IN/MS4120F-1204. It is a damper assy vent and is classified under Federal Supply Class 4140 (4140 - Fans, Air Circulators, and Blower Equipment), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 4140 - Fans, Air Circulators, and Blower Equipment and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.