C3
2
7.7
An envelope size that fits an A3 sheet without folding
- noun
- Specialized
:
C3
- To send the large documents, make sure to use a C3 envelope to avoid folding.
Examples
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Pad leader, stay on C3.
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What's C3?
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Cue C3.
Academic text (2000) -
White had king C3, rook A1, knight D5, pawns B2 and C4.
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C3.
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B1, C3.
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The poster was printed on a C3 envelope that kept the A3 sheets flat.
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I ordered custom stationery that includes C3 envelopes for my invitations.
How Big
Surface Forms
Etymology
C3 comes from an international paper-size system where the C envelope sizes are made to hold A-series sheets, and a C3 is exactly big enough to take an A3 sheet without folding. A helpful way to remember this is to think of 'C' as 'cover', because an envelope covers the paper.