This standard applies to factory-made Forced
Circulation, Free-Delivery Unit Coolers for refrigeration, as
defined in Section 3, for operation under either fi-osting or
non-fi-osting conditions, using Volatile Refrigerants.
ARI 420-2000 history
2008ARI 420-2008 Performance Rating of Forced-Circulation Free-Delivery Unit Coolers for Refrigeration