C4 324x229 mm Envelopes
You can place an A4 sheet in a C4 envelope. Envelopes of this size are suitable for sending magazines, catalogs or documents.
C5 229x162 mm Envelopes
You can place an A5 sheet or a folded A4 sheet in a C5 envelope. Envelopes of this size are suitable for sending postcards, letters or documents.
C65 229x114 mm Envelopes
You can place a two times folded A4 sheet in a C65 envelope. Envelopes of this size are suitable for mailing correspondence.
C6 162x114 Envelopes
You can place a four times folded A4 sheet or two times folded A5 sheet in a C6 envelope. Envelopes of this size are suitable for sending leaflets or small postcards.