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HELP IN CHOOSING ENVELOPES

Envelope sizes and uses

DL to A4 folded in thirds, C5 to A4 folded in half, C4 to A4 without folding. Compare the sizes in millimeters and choose the stock for the contents.

Envelope size chart

The dimensions are given as the shorter and longer sides. Check the direction of the flap and the position of the window in the description of the specific product.

On your phone, swipe the table sideways to see all the columns.

Standard envelope sizes and fit to documents
Envelope sizeDimensions [mm]What fits?UseView in store
DL110 × 220A4 into three partsLetters, invoices and oblong leaflets.PrintedPlain
C6114 × 162A6 without folding; A4 into four partsCards, invitations and short correspondence.PrintedPlain
B6125 × 176A6 with more to spareInvitations and small prints.PrintedPlain
C6/5114 × 229A4 into three partsLong-format correspondence; also suitable for certain envelope inserters.PrintedPlain
C5162 × 229A5 without folding; A4 in halfLetters, brochures and documents folded in half.PrintedPlain
B5176 × 250A5 with more spaceDocuments and brochures requiring more space than in the C5.PrintedPlain
C4229 × 324Unfolded A4Contracts, letters and documentation.PrintedPlain
B4250 × 353A4 with more spaceLarger sets of documents and loose folders.PrintedPlain

Compare the proportions

Diagrams maintain side proportions and a common scale between formats. They do not represent the thickness or size of the inside of the case.

DL · 110 × 220 mm
When you fold the A4 in thirds, you will get approximately 99 × 210 mm.
C6 · 114 × 162 mm
An A6 sheet is 105 × 148 mm.
B6 · 125 × 176 mm
It is larger than C6; for thicker contents, check its actual dimensions.
C6/5 · 114 × 229 mm
It is larger than DL. Compatibility with an envelope inserter depends on the envelope model and flap.
C5 · 162 × 229 mm
An A5 sheet is 148 × 210 mm.
B5 · 176 × 250 mm
Choose a stock for stiff or thick contents; the format itself does not determine the capacity.
C4 · 229 × 324 mm
An A4 sheet is 210 × 297 mm. It does not need to be folded.
B4 · 250 × 353 mm
Before purchasing, measure the folder: not every folder will fit into a standard B4 envelope.

Which envelope for an A4 document?

Unfolded A4

Select C4. B4 gives you more headroom for more content. Folders and binders require separate measurement.

A4 folded in half

Select C5. When you need more clearance, compare B5.

A4 folded into three parts

Select DL. C6/5 is slightly larger; is not the same format as DL.

What should you pay attention to when choosing the size?

Select an envelope for the document →