A lotta people don't know that there are TWO sizes of large flat rate boxes available at the USPS. : r/Ebay
Boxes and Labels:
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USPS Flat Rate Box Sizes, Prices, and How it Works [Updated with 2021 Rates]- Shippo
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Amazon.com : USPS Priority Mail Large Video Box 9 1/4" x 6 1/4" x 2" : Media Mailers : Office Products
