---
kind: "unit"
title: "39"
title_heading: "Postal Service"
key: "chIII/subchE/part3040"
level: "part"
label: "Part 3040"
heading: "Product Lists and the Mail Classification Schedule"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/39/chIII-subchE-part3040"
sections_count: 39
---

# Part 3040 — Product Lists and the Mail Classification Schedule

Title 39 C.F.R. — Postal Service › Chapter III — Postal Regulatory Commission › Subchapter E — Regulations Governing Market Dominant Products, Competitive Products, Product Lists, and Market Tests

## Contents

- [Subpart A — Product Lists and the Mail Classification Schedule](/cfr/39/chIII-subchE-part3040-subpartA.md)
- [Subpart B — Requests Initiated by the Postal Service To Modify the Product Lists](/cfr/39/chIII-subchE-part3040-subpartB.md)
- [Subpart C — Requests Initiated by Users of the Mail to Modify the Product Lists](/cfr/39/chIII-subchE-part3040-subpartC.md)
- [Subpart D — Proposal of the Commission to Modify the Product Lists](/cfr/39/chIII-subchE-part3040-subpartD.md)
- [Subpart E — Requests Initiated by the Postal Service To Make Material Changes or Minor Corrections to the Mail Classification Schedule](/cfr/39/chIII-subchE-part3040-subpartE.md)
- [Subpart F — Size and Weight Limitations for Mail Matter](/cfr/39/chIII-subchE-part3040-subpartF.md)
- [Subpart G — Requests for Market Dominant Negotiated Service Agreements](/cfr/39/chIII-subchE-part3040-subpartG.md)