Shipping Supplies Boxes Priority Mail Flat Rate® Small Box Single, Pack of 10 or 25 8-11/16" (L) x 5-7/16" (W) x 1-3/4" (H)

Sep 4, 2025 · Learn all about USPS boxes, including types, costs, free options, and shipping tips to help you save money and choose the right packaging for your business.

Shop our selection of Boxes, Priority Mail Shipping Supplies on the USPS.com Postal Store

Priority Mail, including Priority Mail Flat Rate shipping products, has fast shipping times (2-3 days) with flexible prices. Get free flat rate boxes and print postage labels online.

Free Shipping Supplies Boxes Priority Mail® Labels Roll of 250 | Self-Adhesive 3" (W) x 1-7/8" (H)

Shop our selection of Priority Mail Shipping Supplies on the USPS.com Postal Store

Find USPS locations like Post Offices, collection boxes, and kiosks so you can send packages, mail letters, buy stamps, apply for passports, get redeliveries, and more.

Learn how to ship a package with USPS, from choosing the right mail service, packing your box, writing the address, calculating postage, and scheduling a pickup.

Boxes Postage Priority Mail® Forever Prepaid Flat Rate Side-Loading Medium Box Includes Customer's Return Address 14-1/8" (L) x 12" (W) x 3-1/2" (H) $21.95

Use Click-N-Ship to ship packages from your home or office. Learn about discounts when using enhanced Click-N-Ship service; order free boxes; print USPS Ground Advantage, Priority Mail, …