Standard sizes of envelopes

Postage costs are important to determine the price of your mailing. Consult the website of your local postal service to account for regulations and limitations regarding e.g., size and shape.

Code Dimensions (mm) What fits in it? Remark
E4 280 x 400 2.1.1.1.1.1.5 sheet of B4

international format

EA4 220 x 312 A4 sheet

NL format

EA 5 156 x 220 A4 dubble folded → A5

NL format

B4 250 x 353 C4 pocket

older Belgian format

175 x 265 Pocket / A4 dubble folded
B5 176 x 250 Pocket / A4 double folded
160 x 240 Pocket / A4 double folded

Belgian format

B6 125 x 176 C6 envelope

German format

C3 324 x 458 A3 sheet

unusual format

230 x 310 A4 sheet

Belgian format

C4 229 x 324 A4 sheet

international format

C5 162 x 229 A4 double folded → A5

international format

C5/6 114 x 229 A4 'long' folded → one third A4

so called US size

DL 110 x 220 A4 folded in 3 → one third A4

DIN Long

C6 114 x 162 A4 4x folded → A6

international format

reply env 107 x 215 A4 'long' folded

long reply envelope

reply env 110 x 156 A4 4x folded

small reply envelope

90 x 140 small greeting card

envelope with a diamond flap


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Decades of experience

Thanks to over 55 years of experience ánd ultramodern machinery – among the most advanced in Europe – we can effortlessly meet your needs.



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You can count on a flawless production process, we produce over 3 million envelopes a day



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Elep is a front runner in terms of socially responsible entrepreneurship – in all of its facets. You can count on our loyal employees. And we do everything we can to respect the environment.