Versions of 39 CFR 3030.121 - Postal Service rate adjustment filing on LawServer 2024 39 CFR 3030.121 – Postal Service rate adjustment filing 2023 39 CFR 3030.121 – Postal Service rate adjustment filing 2022 39 CFR 3030.121 – Postal Service rate adjustment filing 2021 39 CFR 3030.121 – Postal Service rate adjustment filing