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There are three classes of mail:
- First-Class - Personal mail, including letters and postcards
- Standard - Advertising or not of a personal nature
- Periodical - Magazines, newspapers, etc.
There are four types of mail:
- Postcard
- Letter
- Flat (or large envelope)
- Parcel
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Minimum |
Maximum |
| Length |
5 inches |
6 inches |
| Height |
3.5 inches |
4.25 inches |
| Thickness |
.007 inch |
.016 inch |
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Minimum |
Maximum |
| Length |
5 inches |
11.5 inches |
| Height |
3.5 inches |
6.125 inches |
| Thickness |
.007 inch |
.25 inch |
| Letters that meet one or more of the nonmachinable
characteristics in DMM 101.1.2 are also subject to the $0.20 nonmachinable
surcharge. |
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Minimum* |
Maximum |
| Length |
11.5 inches |
15 inches |
| Height |
6.125 inches |
12 inches |
| Thickness |
.25 inch |
.75 inch |
| * Flats exceed at least one of these dimensions.
Pieces that are rigid, nonrectangular, or not uniformly thick
pay package prices. |
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Length + Girth
Length + Girth combined cannot exceed 108 inches (Parcel Post
cannot exceed 130 inches.)
Length
The longest side of the package
Girth
Measurement around the thickest part (perpendicular to the
length.) |
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