Envelope Tips

There are 3 things to consider when ordering envelopes:

  • the orientation
  • the seam
  • and the flap

Common envelope sizes

#

Envelope size (inches)

8

3 5/8 X 6 1/2

8 1/2

3 3/4 X 6 3/4

9 Old

4 X 9

9 New

3 7/8 X 8 7/8

10

4 1/8 X 9 1/2

11

4 1/2 X 9 5/8

14

5 X 11 1/2

A-2

4 3/8 X 5 3/4

A-6

4 3/4 X 6 1/2

A-7

5 1/4 X 7 1/4

Orientation

Open Side (OS)
Envelope flap opens on the long dimension
Open End (OE) *
Envelope flap opens on the short dimension

Seam

Double Side Seam (DSS)
Seam on both sides of the envelope
Cross Back (CB)
Seams diagonally across the back of the envelope
Center Seam (CS)
Center Seam
Gussett *
Folds that allow the envelope to expand like and accordion for bulky objects

 

Flap

VFlap * Regular Flap
Square Flap * Wallet Flap *

* Please note additional hand insertion charges may apply when choosing non-machinable envelopes.