Office stationary packaging guide
The most widely used packaging envelopes sizes are C4, C5, C6, padded and DL.
Envelope of C4 size can hold sheet of A4 size. The dimension of this type of envelope is 324mm × 229mm. Envelope of C4 size could be used for mailing hefty documents and delivery notes.
Envelope of C5 size can hold sheet of A5 size. The dimension of this type of envelope is 229mm × 162mm. It is the most commonly used envelope size for purpose of mail shots and business letters. The weight of envelope of C5 size should range from 90 gsm to 130 gsm (grams per square inch).
|Common letter envelopes|
|Booklet and catalog envelopes|
|Format||Size (Height × Width)||Size (Height × Width)||Suitable for content format|
|DL||110 × 220mm||4.33 × 8.66"||1/3 A4|
|C7||81 × 114mm||3.2 × 4.5"||1/3 A5|
|C7/C6||81 × 162mm||3.19 × 6.4"||1/3 A5|
|C6||114 × 162mm||4.5 × 6.4"||A6 (or A4 folded in half twice)|
|C5||162 × 229mm||6.4 × 9"||A5 (or A4 folded in half once)|
|C4||229 × 324mm||9.0 × 12.8"||A4|
|C3||324 × 458mm||12.8 × 18"||A3|