Use official USPS Flat Rate packaging. Enter the actual weight (max 70 lbs).
- 12-1/2" × 9-1/2"
- Up to 70 lbs
Product cards
USPS Flat Rate
Priority Mail Flat Rate Envelope Priority Mail Legal Flat Rate Envelope Use official USPS Flat Rate packaging. Enter the actual weight (max 70 lbs).
- 15" × 9-1/2"
- Up to 70 lbs
Priority Mail Padded Flat Rate Envelope Use official USPS Flat Rate packaging. Enter the actual weight (max 70 lbs).
- 12-1/2" × 9-1/2"
- Up to 70 lbs
Priority Mail Small Flat Rate Box Use official USPS Flat Rate packaging. Enter the actual weight (max 70 lbs).
- 8-11/16" × 5-7/16" × 1-3/4"
- Up to 70 lbs
Priority Mail Medium Flat Rate Box (top-loading) Use official USPS Flat Rate packaging. Enter the actual weight (max 70 lbs).
- 11-1/4" × 8-3/4" × 6"
- Up to 70 lbs
Priority Mail Medium Flat Rate Box (side-loading) Use official USPS Flat Rate packaging. Enter the actual weight (max 70 lbs).
- 14-1/8" × 12" × 3-1/2"
- Up to 70 lbs
Priority Mail Large Flat Rate Box Use official USPS Flat Rate packaging. Enter the actual weight (max 70 lbs).
- 12-1/4" × 12" × 6"
- Up to 70 lbs
Note: Continental US only. Alaska/Hawaii rates vary. Live checkout loads when JavaScript is enabled.