What are USPS Flat Rate Boxes?
USPS Flat Rate Boxes are boxes with flat rates, no matter what the weight of the package is. If you’re small items that are heavy, Flat Rate Boxes are going to be your best option. Having a bulk supply of these boxes can help your operations save money and operate smoothly.
How Much Are USPS Flat Rate Boxes?
See the table below for a preview of the cost depending upon the size.
The following rates are based on pricing from September 3, 2019.
| Type | Size | Price |
|---|---|---|
| Letter Envelope | 12 1/2" x 9 1/2" | 6.95 |
| Gift Card Envelopes | 10" x 7" | 6.95 |
| Window Envelopes | 10" x 6" | 6.95 |
| Small Envelopes | 10" x 6" | 6.95 |
| Padded Envelopes | 12 1/2" x 9 1/2" | 7.55 |
| Legal Envelopes | 15" x 9 1/2" | 7.25 |
| Small Box | 8 11/16" x 5 7/16" x 1 3/4" | 7.50 |
| Medium Boxes | 11 1/4" x 8 3/4" x 6" or 14" x 12" x 3 1/2" | 12.80 |
| Large Box | 12-1/4" x 12-1/4" x 6" or 24-1/16" x 11-7/8" x 3-1/8" | 17.60 |
| APO/FPO Box | 12-1/4" x 12-1/4" x 6" | 16.10 |
| Large Board Game Box | 23 11/16" x 11 3/4" x 3" | 17.60 |