The General Standards Committee of theAir-Conditioning and Refrigeration Institute(ARI) (Arlington, VA) has approved for release updates for ARI Guideline G-2002, "Mechanical Balance of Fans and Blowers," and ARI Guideline T-2002, "Specifying the Thermal Performance of Cool Storage Equipment." These guidelines are available for free download on ARI's website atwww.ari.org.