Envelope Sizes

Size C3

To take:	A3 297 x 420mm unfolded
Uses:	computer printouts, brochures, calendars, showcards

Size C4

To take:	A4 210 x 297mm unfolded A3 297 x 420mm folded once
Uses:	brochures, booklets and general printed matter, A4 size flat

Size C5

To take:	A4 210 x 297mm folded once A5 148 x 210mm unfolded
Uses:	small brochures and letterheads, A4 folded in half

Size C6

To take:	A4 210 x 297mm folded twice A5 148 x 210 folded once
Uses:	general correspondence, invoices, etc.

Size DL

To take:	A4 210 x 297mm folded twice A5 148 x 210mm folded once
Uses:	all general correspondence, invoices, etc.

Size B4

To take:

to take sizes larger than the more popular C4 size

Size B5

To take:

to take sizes than the mor popular C5 size