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Solved: I have a Priority Mail Large Mailing Box, what typ... - The eBay Community
Priority Mail Large Flat Rate Box 12 1/4" x 12 1/4" x 6" – Stamps.com Supplies Store
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USPS PRIORITY: LARGE FLAT RATE – SWINGSHIFTGAMING
Can I ship a box like this? Technically a medium flat rate box and 1.5 priority shoe boxes taped together, but just under 5 pounds. They are knee high platform boots that
USPS Large Priority Mail Styrofoam Box 4 Pack - TSK Supply