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  1. Showing 1 - 36 out of 174 results for "usps medium flat rate box size"
    1. IDL Packaging Medium Corrugated S…
      ($6.30 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    2. (16)
      Medium Moving & Shipping Boxes 1…
      ($5.70 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    3. IDL Packaging - B-18126-5 Medium …
      ($7.99 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    4. IDL Packaging - B-18126-25 Medium …
      ($3.96 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    5. (15)
      BOX USA Flat Mailer Shipping Boxes …
      ($0.88 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    6. IDL Packaging - B-1684-5 Small Corr…
      ($7.39 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    7. Medium Shipping & Moving Boxes 1…
      ($9.19 / 1 ct)
      A
      Amazon.com
      delivery truckFree shipping
    8. IDL Packaging Medium Corrugated S…
      $86.42
      W
      warehousesoverstock
      SALE
      delivery truckFree shipping
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    • USPS® Delivering for everyone | USPS® Holiday Shipping

    • Flat Rate Box Sizes | In Stock – Ships Today | Fast Delivery

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