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The C6 envelope size is 114x162mm and is available in over 80 colours and flap styles. From our signature iflap banker style to our wallet flap, our envelopes are made in Australia right on our premises from premium papers, so there is no middle man. Our C6 envelopes can be posted in Australia for the cost of a standard letter.
The equivalent US size is either A-2 4 3/8 x 5 3/4 (111x146mm) or A-6 4 3/4 x 6 1/2 (121x165mm).