The revisions dated August 22, 2008 were issued to incorporate the following revised requirements:
1. Modification of Figure 103 to clarify the graphic showing the abrasive cup wheel
2. Modification of Figure 104 to specify that the chamfer should be excluded from the Df and C dimensions of the flange
Please note that these changes are for the UL standard only. The changes align the UL standard with the presently published CSA version, CSA-C22.2 No. 60745-2-3.