Envelope Glossary
Like most industries, the envelope industry has it's own technical terms or jargon. Read more about what the definitions mean here.
Window & Interior Opaques
Understand envelope window positioning and the different types of windows, and interior opaques, designed to enhance security.
Sealing Methods
There are a variety of envelope sealing methods which can be used for different applications. Find out most common sealing types.
Envelope Sizes
Envelopes are made in sizes to suit the size of content they enclose, and these are generally based around the ‘A’ sizes of paper i.e. A5, A4, A3 etc.
To measure the size of an envelope, the side where the flap is on is always given as the last dimension e.g. 110 x 220mm indicates a wallet or a banker and 220 x 110mm indicates a pocket.
A combination of the traditional Imperial and the European metric sizes has resulted in a wide range of envelope sizes. In addition to the stock sizes available there is an almost infinite range of envelope sizes that can be custom made. In reality, the highest demand is for a basic range of envelope sizes, which are:
Envelope size summary
Use this table below for a breakdown of each envelope size and its dimensions in mm, cm and inches.
|
Envelope Size |
Size (mm) |
Size (cm) |
Size (inches) |
|---|---|---|---|
|
C4 |
229 x 324 |
22.9 x 32.4 |
9 x 12.8 |
|
C5 |
162 x 229 |
16.2 x 22.9 |
6.4 x 9 |
|
C5+ |
162 x 235 |
16.2 x 23.5 |
6.4 x 9.25 |
|
C6 |
114 x 162 |
11.4 x 16.2 |
4.5 x 6.4 |
|
DL |
110 x 220 |
11 x 22 |
4.33 x 8.66 |
|
DL+ |
114 x 229 |
11.4 x 22.9 |
4.5 x 9 |
|
Square A |
160 x 160 |
16 x 16 |
6.2 x 6.2 |
|
Square B |
220 x 220 |
22 x 22 |
8.66 x 8.66 |