Collection: C5 Envelopes (162 x 229mm)

C5 envelopes measure 162 x 229mm and are designed to hold A5 documents or A4 folded in half — standard for greeting cards, invitations, brochures, A5 booklets and half-fold letters. With over 210 products across the range, there is a C5 envelope for every application — from standard business correspondence to premium invitation and colour-matched seasonal mailings.

Paper weights run from 22–350gsm, 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 C5 Envelope?

A C5 envelope (162 x 229mm) holds A5 cards, A5 leaflets, A4 folded in half, half-fold invitations, booklets, A5 greetings. This makes it the standard choice for greeting cards, invitations, A5 leaflets, business correspondence, direct mail, half-fold letters.

Benefits of C5 Envelopes (162 x 229mm)

• Standard C5 format (162 x 229mm) — holds A5 documents or A4 folded in half — standard for greeting cards, invitations, brochures, A5 booklets and half-fold letters.
• over 210 products — spanning white, manilla, coloured and specialist options.
• Paper weights 22–350gsm — 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) or small parcel within standard weight limits.
• a range of colour options — 88 shades available.

Frequently Asked Questions

What fits in a C5 envelope?
A C5 envelope (162 x 229mm) is designed to hold A5 cards, A5 leaflets, A4 folded in half, half-fold invitations, booklets, A5 greetings. It is the standard size for greeting cards, invitations, A5 leaflets, business correspondence, direct mail, half-fold letters.

What paper weight should I choose for C5 envelopes?
80gsm for everyday use; 100–120gsm for invitations and premium correspondence; heavier weights available for luxury stationery applications

Are C5 envelopes compatible with Royal Mail?
Yes. C5 envelopes (162 x 229mm) qualify as large letter (under 100g and 5mm) or small parcel 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 C5 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 C5 envelopes come in colours?
Yes — a range of colour options are available across the C5 range, covering white, manilla, bold primaries, pastels and metallics. Coloured envelopes in the C5 size are particularly popular for greeting cards and invitation campaigns.