How big are priority mail boxes

The size of Priority Mail boxes varies depending on the type of box and the service level chosen. Here are some common sizes and dimensions for Priority Mail boxes:

Small Flat Rate Box

• Dimensions: 5-1/2" x 8-1/2" x 1-1/2"
• Weight limit: 70 lbs
• Cost: $7.95 (as of 2022)

Medium Flat Rate Box

• Dimensions: 11" x 13-1/2" x 2-3/4"
• Weight limit: 130 lbs
• Cost: $14.35 (as of 2022)

Large Flat Rate Box

• Dimensions: 12" x 12" x 5-1/2"
• Weight limit: 130 lbs
• Cost: $19.95 (as of 2022)

Regional Rate Box A

• Dimensions: 12-1/2" x 12-1/2" x 5-1/2"
• Weight limit: 15 lbs
• Cost: $8.45 (as of 2022)

Regional Rate Box B

• Dimensions: 13-1/2" x 13-1/2" x 3-1/2"
• Weight limit: 20 lbs
• Cost: $10.95 (as of 2022)

Priority Mail Express Box

• Dimensions: 12" x 12" x 5-1/2"
• Weight limit: 70 lbs
• Cost: $26.35 (as of 2022)

Please note that these dimensions and weight limits are subject to change, and you should always check with the USPS website or a local post office for the most up-to-date information. Additionally, these boxes are designed to fit specific sizes and shapes, so you may need to adjust your packaging to fit within the box.