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A Guide to Envelopes

Envelopes are available in various shapes and sizes. The most common are C4, C5, C6, and DL, which are suitable for A4, A5, A6, and 1/3 A4 paper, or free reception sizes. Apart from the standard types of envelopes, padded bags, dust jackets, gusset envelopes and machine envelopes are also available.

There are many companies that provide medical printing services. You can easily get x-ray envelopes from various online sources.

Envelope type

C4 size

C4 envelopes are suitable for A4 paper that is not folded. The dimensions of the C4 envelope are 229 mm x 324 mm. The C4 envelope is widely used stationery and is available in most offices. C4 envelopes are usually used to send contracts, reports, and brochures.

C5 size

C5 envelopes are suitable for a sheet of A5 paper that is not folded or A4 sheet folded in half. The dimensions of C5 are 162 mm x 229 mm. C5 envelopes are generally used for photos of letters or business letters.

C6 size

C6 envelopes are suitable for a sheet of A6 paper that is not folded or one sheet of A5 that is folded in half. The dimensions of the C6 are 114 mm x 162 mm. The C6 envelope is popular for personal use and fits postcards or greeting cards.

DL size

The DL envelope is suitable for a sheet of A4 paper that has been folded twice. The dimensions of the DL cover are 110 mm x 220 mm. DL envelopes are usually used to send one-page emails.

Council supports

Envelopes supported by the council provide additional protection for important documents. They are usually made of hard, sturdy manila boards that form the back of the envelope.


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