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  1. Showing 1 - 36 out of 172 results for "usps flat fee boxes"
    1. (1)
      Aviditi White Corrugated Cardboard …
      ($5.30 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    2. Medium Moving & Shipping Boxes 1…
      ($4.20 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    3. IDL Packaging Flat Corrugated Ship…
      $63.80
      W
      warehousesoverstock
      SALE
      delivery truckFree shipping
    4. (20)
      IDL Packaging - B-12128-5 Small C…
      ($7.39 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    5. Aviditi White Corrugated Cardboard …
      ($1.32 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    6. (6)
      AVIDITI White Shipping Boxes 14.5…
      ($2.82 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
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    • USPS® Flat Rate | The Official Website of USPS®

    • Cardboard Mailing Boxes | In Stock – Ships Today

    • Buy shipping flat box | Amazon.com® Official Site

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