C4 Envelopes

This is the size to reach for when a fold would be a problem: certificates, signed contracts, photographs and anything that gets scanned at the other end. Because the contents stay flat, board-backed or padded versions are worth considering for anything that must not bend in transit. Pocket styles open on the short edge and machine-insert more easily. See envelopes, pocket envelopes and C5 envelopes.

Not sure which size you need? Our envelope size guide explains which envelope fits which paper size and fold.

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    C4 Envelopes for A4 Documents

    Shop C4 envelopes for mailing A4 documents flat. Ideal for reports, contracts, certificates and office correspondence.

    All C4 Envelopes products

    3 products in C4 Envelopes.