Sizes, formats and closure types of envelopes and mailing bags

Labeling envelopes by hand: It is best to label an envelope clearly in the middle with the recipient's address. The sender's address should be at the top left. Use dark, smudge-proof pens and leave enough space for the stamp at the top right.
Label envelopes with a printer: If you want to use a printer, insert the envelope according to the marking in the feeder and select the appropriate envelope format in the print menu.

Make sure that the recipient address is in the middle and the sender address is at the top left . Before printing, check the alignment in the preview and, if necessary, test an envelope to avoid misprints.

DIN formats for envelopes

The DIN paper formats also determine the standard sizes for envelopes. This standardization simplifies correspondence and automated logistics. The most common formats are DIN C6, DIN long, DIN C5 and DIN C4. For special requirements, there are also special formats such as square envelopes.

DIN C7 (8.1 x 11.4 cm): For small cards, gifts of money, DIN A7 mini cards
DIN C6 (16.2 x 11.4 cm): Ideal for handwritten, private letters, invitation cards and DIN A5 double cards
DIN C5 (16.2 x 22.9 cm): For large greetings cards and simple DIN A4 documents
DIN C4 (22.9 x 32.4 cm): Perfect for important documents that should not be folded, such as certificates and diplomas.
DIN long (11 x 22 cm): Suitable for business letters

Choose the right envelope size according to the size of the sheets you want to send.

Sealing types

Wet adhesive: Rubber coating on the flap that is activated by moisture
Pressure-sensitive adhesive: No moistening necessary, adhesive surface protected by cover strips that must be removed before gluing
Self-adhesive: Adhesive strips on the flap and back