IBM F50 RS/6000 7025 - Manual (Page 243)

3. Reinstall the door at the front of the system by aligning the pins with the hinges,
and sliding the door down.
4. Close the door.
Attention: Be sure to maintain a clearance of at least 51 mm (2 inches) on all
sides of the system to allow for air circulation.
Chapter 5. Installing Options 5-99