# Disclaimer _Last updated: September 15, 2026_ ## Reference, not advice PackRated.com publishes reference material about packaging and shipping specifications. It is educational. It is not engineering advice, legal advice or a professional opinion on your product, your shipment or your contract. ## Why that distinction matters here A board grade that performs in one distribution environment fails in another. A certificate describes the board as tested, not the box as packed. A carrier rule that applied last year may have been revised. Whether a specification is right for a given product depends on the product, the lane, the handling, the climate, the stacking plan and the commercial agreement behind the shipment. An article cannot see any of that. ## Verify before you specify Before committing to a packaging specification, confirm the current requirement against the governing document and, where the stakes justify it, against a qualified packaging engineer or an accredited testing laboratory. Where a figure here could not be confirmed against a primary source, the text says so. ## Standards and designations Test method designations, classification items and certification program names are referenced for identification. This site is not affiliated with, endorsed by or speaking for any standards body, trade association, carrier or certification program. Governing documents are published by those organizations, and several are available only by purchase or membership. ## No relationship created Reading this site, subscribing to updates or corresponding with us creates no professional or advisory relationship of any kind. ## Limitation To the fullest extent permitted by law, the operator accepts no liability for loss or damage arising from use of or reliance on this material.