§ 121.0. Market-dominant product service standards.
50 words·~1 min read·
/us/cfr/t39/s§ 121.0·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Service standards in this part are contingent upon proper acceptance before the applicable day-zero Critical Entry Time (CET). Applying the service standards appearing in this part, effective service standards for combinations of 5-digit originating ZIP Codes and 5-digit destinating ZIP Codes can be found in a lookup table at www.usps.com.