How much is it to mail a flat rate box

The cost to mail a flat rate box depends on the size of the box and the shipping service used. Here are the current prices for USPS Flat Rate boxes:

USPS Flat Rate Boxes

• Small Flat Rate Box: $7.50 (up to 70 lbs)
  • Dimensions: 5.5" x 8.5" x 1.5"
• Medium Flat Rate Box: $14.35 (up to 20 lbs)
  • Dimensions: 11" x 13.5" x 2.5"
• Large Flat Rate Box: $19.95 (up to 20 lbs)
  • Dimensions: 12" x 12" x 5.5"
• Regional Rate Box A: $13.15 (up to 15 lbs)
  • Dimensions: 13" x 12" x 5.5" (only available for shipping within the contiguous United States)
• Regional Rate Box B: $16.35 (up to 20 lbs)
  • Dimensions: 18" x 12" x 8" (only available for shipping within the contiguous United States)

Additional Fees

• Insurance: $2.75 (optional)
• Signature Confirmation: $3.10 (optional)
• Delivery Confirmation: $0.50 (optional)

Note: Prices are subject to change, so it's always best to check the USPS website for the most up-to-date pricing information.

Keep in mind that these prices are for shipping within the United States. International shipping rates may vary.