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39 C.F.R. Part 121 – Service Standards for Market-Dominant Mail Products | Midpage
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Code of Federal Regulations
Title 39
Chapter I
Subchapter C
Part 121
39 C.F.R. Part 121
Service Standards for Market-Dominant Mail Products
121.0
Market-dominant product service standards.
121.1
First-Class Mail.
121.2
Periodicals.
121.3
USPS Marketing Mail.
121.4
Package Services.
Appendix A to Part 121
Tables Depicting Service Standard Day Ranges