Quote
Originally posted by 5Etek-mike:
....ANSI/TIA/EIA-942 [Telecommunications Infrastructure Standard for Data Centers]

Here's the copy and pasted reference:

Hot and Cold Aisles
...Cold aisles are in front of racks and cabinets.
...Hot aisles are behind racks and cabinets.
...A minimum of 1 m (3 ft) of front clearance shall be provided ...1.2 m (4 ft) is preferable
...A minimum of 0.6 m (2 ft) of rear clearance...
:rofl:

Telecommunications Installation and Repair: April 1, 1966 -- November 30, 2011