Collection: C6 Envelopes (114 x 162mm)

C6 envelopes measure 114 x 162mm and are designed to hold A6 cards or A4 folded into quarters — the most widely used size for greeting cards, invitations and small personal correspondence. With over 80 products across the range, there is a C6 envelope for every application — from standard business correspondence to premium invitation and colour-matched seasonal mailings.

Paper weights run from 22–250gsm, covering everyday use through to premium presentation. Closure options include gummed (lick-and-seal) and peel & seal. Available in a range of colour options alongside white and manilla.

What Fits in a C6 Envelope?

A C6 envelope (114 x 162mm) holds A6 greeting cards, A4 folded into quarters, small brochures, gift vouchers, RSVP cards, A6 invitations. This makes it the standard choice for greeting cards, birthday and occasion cards, invitations, small personal correspondence, direct mail cards.

Benefits of C6 Envelopes (114 x 162mm)

• Standard C6 format (114 x 162mm) — holds A6 cards or A4 folded into quarters — the most widely used size for greeting cards, invitations and small personal correspondence.
• over 80 products — spanning white, manilla, coloured and specialist options.
• Paper weights 22–250gsm — from everyday to premium presentation weights.
• Closure options — gummed and peel & seal to suit both personal and volume workflows.
• Royal Mail compatible — qualifies as large letter (under 100g and 5mm thick) — one of the most postage-efficient standard formats within standard weight limits.
• a range of colour options — 60 shades available.

Frequently Asked Questions

What fits in a C6 envelope?
A C6 envelope (114 x 162mm) is designed to hold A6 greeting cards, A4 folded into quarters, small brochures, gift vouchers, RSVP cards, A6 invitations. It is the standard size for greeting cards, birthday and occasion cards, invitations, small personal correspondence, direct mail cards.

What paper weight should I choose for C6 envelopes?
80gsm for standard greeting card use; 100–120gsm for invitations and premium presentation; heavier weights for luxury stationery

Are C6 envelopes compatible with Royal Mail?
Yes. C6 envelopes (114 x 162mm) qualify as large letter (under 100g and 5mm thick) — one of the most postage-efficient standard formats in standard use. Always confirm the packed weight before assigning a postage rate, as the envelope itself contributes to the total weight. If you are mailing at volume, a small test batch before full despatch is recommended.

What closures are available for C6 envelopes?
The range includes gummed (moisture-activated, traditional) and peel & seal (self-adhesive strip) options. Gummed is the preferred choice for greeting cards and personal correspondence. Peel & seal is significantly more practical for business mailing at volume — faster, cleaner and more consistent.

Do C6 envelopes come in colours?
Yes — a range of colour options are available across the C6 range, covering white, manilla, bold primaries, pastels and metallics. Coloured envelopes in the C6 size are particularly popular for greeting cards and invitation campaigns.