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Envelopes come in three standard shapes:

  1. Wallet
  2. Banker
  3. Pocket

These are commonly known as ‘standard’ envelopes and are available in both window face & closed face. Both closed face and window faced envelopes can have a secretive pattern printed on the inside, but this is more common to the window face.

Standard envelopes can be ‘Lick and Stick’, ‘Self Seal’ or ‘Peel and Seal’ and are commonly manufactured from 80gsm white offset paper. Envelopes C4 and larger are also available in 100gsm paper coloured white and gold.

Standard Envelope Sizes

11B          90  x 145mm
12 3/4      92  x 165mm
DL            110 x 220mm
DLE          114 x 225mm
C6            114 x 162mm
DLX         120 x 235mm
C5            162 x 230mm
C4            229 x 324mm


‘Wallet’ envelopes can be ‘lick and stick’, ‘self seal’, or ‘peel and seal’.

‘Banker’ envelopes are always ‘lick and stick’.

‘Pocket’ envelopes can be ‘lick and stick’ or ‘peel and seal’.

Standard ‘pocket’ envelope sizes
The following sizes are standard pocket envelopes which are only available in closed face. These can be ‘peel and seal’ or ‘lick and stick’.

B4       353 x 250mm
B5       250 x 176mm
C4       324 x 229mm
C5       229 x 162mm
C3       458 x 324mm

‘Window’ envelopes
These come in three common sizes:
12 ¾     92 x 165mm
DLX      120 x 235mm
DLE      114 x 225mm

Window size
Standard                                            28 x 95mm
DPID (barcoded addressing)        38 X 95mm

32mm from the left hand edge
16mm from the bottom edge


Non-standard envelopes, window sizes, and positions need to be made to order (such as C5 and C4):

C5 162 x 230mm
Window size
28 x 95mm or 38 x 95mm

22mm from the left hand edge
65mm from the bottom edge 


C4 229 x 324mm
Window size
35 x 95mm, or
38 x 95mm

69mm from the left hand edge
26mm from the bottom edge

Printing of Envelopes

The most common way of printing on envelopes is called overprinting.

Overprinting is when you print (offset) on the face or back of a pre-made envelope. This can be done in 1 to 5 colours. 

Restrictions The envelope needs to be gripped at the head – which means there is no option to bleed the image at the head. When overprinting an envelope a bleed on all sides is not recommended as it creates an ink build up on the machine which will then result in what’s known as “picking” (a transfer of ink onto the back of the envelope).

When full bleed is required, the best option is flat sheet printing. This process is suited to longer run work. The image is printed on a flat sheet within a die line shape (either one or multiple to view), die cut to shape and then made up on envelope machines. This allows full creativity with the image and position of the window. Envelope shapes are available on request.

Note: all printing and overprinting of envelopes should comply with Australia Post Scanning Standards.


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