Media Mail (Book Rate)
Updated April 17, 2019 | Factmonster Staff
Generally used for books (at least eight pages), film (16 mm or narrower), printed music, printed test materials, sound recordings, play scripts, printed educational charts, loose-leaf pages and binders consisting of medical information, and computer-readable media. Advertising restrictions apply. Packages must measure 108 in. or less in combined length and girth.
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