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Tech Notes

Mail piece dimensions

MAILPIECE DIMENSIONS

LETTERS AND POSTCARDS
Letters Postcards
Dimensions Minimum (inches) Maximum (inches) Dimension (inches) Minimum (inches) Maximum (inches)
Height 3.5 6.125 Height 3.5 6
Length 5.0 11.5 Length 5.0 9
Thickness .007 0.25 Thickness .007 .016
Aspect Ratio 1.3 2.5
FOLDED SELF-MAILERS FLATS
Dimensions Minimum (inches) Maximum (inches) Dimension (inches) Minimum (inches) Maximum (inches)
Height 3.5 6 Height 6.125 12
Length 5.0 10.5 Length 11.5 15
Thickness .007 0.25 Thickness 0.25 0.75
Aspect Ratio 1.3 2.5 Flats must exceed at least one minimum dimension
Up to 1 oz Requirement: 70# Text or Offset Paper
1 - 3 oz Requirement:  Minimum of 80# paper; Seals without perf.
Glue may be used as an alternative

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AccuZIP's customer service is great. It keeps us from having down time and I'm always able to get a quick answer. don't have to worry about the size of the order I'm working with a client on. Most times, AccuZIP employees know more than the USPS employees. I've been able to navigate the lack of government employee training, which saves time, money and headaches.
M.L., Lansing, WV