AGREE Chambers (Advisory Group of Reliability of Electronic Equipment), consist of a temperature chamber with a floor that is specially fabricated to accommodate a shaker system.

Typically AGREE Chamber have a temperature ramp rates which exceeds that of standard temperature chambers of up to 10 ° C / Min or above.

Although mostly designed for temperature testing, AGREE chambers are also available with humidity capability.  

For this reason, larger refrigeration compressors are required and therefore these chambers are often water-cooled (to provide cooling of the compressors).

Another method of cooling an LN2 chamber (instead of mechanical refrigeration) is to use LN2 or CO2 (or a combination of both).