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Envelope sizes
Apart from the customised production of special envelopes, standardised envelope sizes are most commonly used for daily or regular mail. These sizes are specified by means of a letter/number combination. Below, you find the most commonly used sizes (sizes are in mm);
EA4: 220 x 312     C4: 229 x 324    EC4: 240 x 340
EA5: 156 x 220    C5: 162 x 229     EA5/6: 110 x 220
C5/6: 114 x 229   EA6: 110 x 156   C6 : 114 x 162
B4 250 x 353   B5 176 x 250   B6 125 x 176
Less used sizes include:
EA3 312 x 441  - EA3/2 156 x 441 -  EA4/2 114 x 312 - EA7 78 x 110
EA 855 x 78 - EB4/2 131 x 371 - EB5 185 x 262 - EB6 131 x 185 - EB7 92 x 131
EB8 65 x 92 - EC4/2 120 x 340 - EC5 170 x 240 - EC6 120 x 170 - EC7 85 x 120
C6/5 114 x 224 - EC 860 x 85

Below you find the envelope sizes that correspond to the following paper sizes:
A-4 double folded     EA5  156 x 220 mm.
A-4 folded three times     EA5/6   110 x 220 mm.
A-4 folded four times    EA6   110 x 156 mm.
A-4 flat    EA4  220 x 312 mm.

Grammage

Name for the mass per surface area of paper, indicated in ‘grams per square meter’ (g/m2), in the (graphic) jargon ‘gsm’:hence, 80 gsm paper weighs 80 grams per square meter. You can convert this by dividing the weight by the length and the width of the paper. Example: your sheet of paper of 210 mm x 297 mm (=A4), weighs 4.99 gram. The weight in grams amounts to: 4.99 grams/0.297 meter/0.210 meter= 80 g/m2.
Many envelopes are manufactured from 80, 90 or 100 gsm paper, envelopes-shop produces envelopes for, amongst others, business invitations and printed materials for private use from 120 gsm quality paper.

Wikipedia information on envelopes

An envelope is the wrap (mostly made from paper) of, for instance a letter or best wishes card. On the front of the envelope, the sender writes the name and the address, consisting of the street name, house number, postal code and the place of destination of the addressee, the recipient. Often, this is first printed on alabel,which is subsequently stuck on an envelope. On the back, the sender may specify his own name and address, or postal code and house number. This is not mandatory, but offers, amongst others, the advantage that in case of delivery problems the letter may be returned to the sender without the necessity to open it. Not all Dutch people have this habit.
Forstamping theletter, one or morepostage stampsare stuck in the right upper corner of the front of an envelope or applied by a stamping machine. In some cases, no stamp is required, namely when a prepaid reply number is used.  Most of the time, an envelope can be sealed by means of an adhesive edge with gum, which is applied on the sealing flap.The gum is rendered adhesive by moistening itwithsaliva or water. There are also envelopes, which can be sealed with an adhesive strip. This is user-friendly, but produces extra waste in the form of a plastic protective strip.
There are envelopes in many forms, colours and sizes. Some types of envelopes have a transparent window so as to allow for the address to be placed on the content instead of the envelope itself. There are envelopes with a printed interior, in order to prevent the readability of the content from outside (by holding the envelope against the light). In order to send CDs or fragile items, there are envelopes in various sizes, which are lined with bubble wrap (also called: bubble envelope). So-called deed envelopes are used for official documents or the sending of A4 documents.
Some big companies use internal envelopes with a large number of fields to fill in an address. Such internal envelopes can be used many times over, by crossing out the old address and entering a new address in the next field. External use of such envelopes would be considered impolite, but there is common agreement that the company-internal use of such envelopes is admissible.
History

The word envelope, which is derived from the French word enveloper, means to wrap or to enclose.The history of the envelope starts 2000 years before Christ.At that time, envelopes were made out ofclay, animal skins and papyrus.
With the development of paper in the 19th century, the use of envelopes became universalised.  In 1835, the Brit Bewer commercialised the first envelopes.

 
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          Envelopes-shop.com
          Ringslang 19
          3824 VD Amersfoort - The Netherlands

          Chamber of commerce 52117766
       
 
 
 


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