US lawFederal (United States)Session lawPub. L. 86-682 — To revise, codify, and enact into law, title 39 of the United States Code, entitled “The Postal Service”.Title 39Part IV4252Pub. L. 86-682, tit. 39, pt. IV, ch. 59, sec. 4252Weight limitEnactedYear: 1960Length: 23 wordsOfficial source § 4252. Weight limit The maximum weight of first class mail is the same as the maximum limit applicable to fourth class mail.PreviousPub. L. 86-682, tit. 39, pt. IV, ch. 59, sec. 4251NextPub. L. 86-682, tit. 39, pt. IV, ch. 59, sec. 4253