Values for “usps-container” field
Possible services include:
VARIABLE (replaces NONE option)
FLAT RATE ENVELOPE
PADDED FLAT RATE ENVELOPE
LEGAL FLAT RATE ENVELOPE
SM FLAT RATE ENVELOPE
WINDOW FLAT RATE ENVELOPE
GIFT CARD FLAT RATE ENVELOPE
FLAT RATE BOX
SM FLAT RATE BOX
MD FLAT RATE BOX
LG FLAT RATE BOX
REGIONALRATEBOXA
REGIONALRATEBOXB
REGIONALRATEBOXC
RECTANGULAR
NONRECTANGULAR
* Note: RECTANGULAR or NONRECTANGULAR must be indicated, when ‘usps-size’ is set to ‘LARGE’.
| Express Mail Service | Value | Description |
| NONE | For someone using their own package | |
| 0-1093 | Express Mail Box, 12.25 x 15.5 x | |
| 0-1094 | Express Mail Tube, 35 x 6 | |
| EP13A | Express Mail Cardboard Envelope, 12.5 x 9.5 | |
| EP13C | Express Mail Tyvek Envelope, 12.5 x 15.5 | |
| EP13F | Express Mail Flat Rate Envelope, 12.5 x 9.5 |
| Priority Mail Service | Value | Description |
| NONE | For someone using their own package | |
| 0-1095 | Priority Mail Box, 12.25 x 15.5 x 3 | |
| 0-1096 | Priority Mail Video, 8.25 x 5.25 x 1.5 | |
| 0-1097 | Priority Mail Box, 11.25 x 14 x 2.25 | |
| 0-1098 | Priority Mail Tube, 6 x 38 | |
| EP14 | Priority Mail Tyvek Envelope, 12.5 x 15.5 | |
| EP14F | Priority Mail Flat Rate Envelope, 12.5 x 9.5 |
| Parcel Post Service | Value | Description |
| NONE | For someone using their own package |