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Install 42U Heavy Duty Rack Extension

See this topic to learn how to install 42U Heavy Duty Rack Extension.

  • Each unit of extension module comes with additional capacity of one unit 0U PDU to each side of the rack.

  • Each rack cabinet supports up to two units of rack extension (one to the front and one to the rear side). However, if the rear side has been installed with the Rear Door Heat Exchanger, the rack extension cannot be installed.


  1. Remove the door.
    Figure 1. Removing a door

    • Hold the door in place, and lift both hinge pins until they lock in the open position so that the door is disengaged.
    • Remove the door from the rack cabinet frame.
  2. Remove the two hinges and the two doorstops.
    Figure 2. Removing the door hinges and doorstops

  3. Remove the door latch.
    Figure 3. Removing the door latch

  4. Secure an extension panel to the side of the rack with seven screws, and repeat the step on the other extension panel.
    It is advised not to fully tighten the screws in this step.
    Figure 4. Installing an extension panel

  5. Align the top cover with the screw holes on the front of the rack, and secure each side with two screws.
    Figure 5. Installing the extension top cover

  6. Secure each of the two front panels to the extension panels with four screws. If the extension panel screws have not been fully tightened, tighten them now.
    Figure 6. Installing the extension front panels

  7. Install the two hinges, two doorstops, and the door latch to the rack.
    Figure 7. Install the hinges, doorstops, and door latch

  8. Install the door back to the rack.
    Figure 8. Installing the door

    • Align the door with the hinges, and hold the door in place.
    • Push the hinge pins down to the closed position so that the door is secured.