C4 Envelopes

Large C4 Envelopes For All Occasions

C4 envelopes are the perfect packaging for sending A4-sized documents without folding. Measuring 229 x 324mm, they provide a secure and professional option for mailing important papers, reports, thick card documents, or promotional materials.

Available in a variety of colours and finishes, including white, manilla, gold, and vibrant blues, these envelopes are designed to elevate the presentation of your correspondence.

Order a free sample to experience the premium quality for yourself, or add a box to your basket and impress your readers today.

C4+ White Gloss Padded Bubble Envelopes (Qty 100) 240mm x 340mm

Boxed: £79.15
Unit: £0.79

C4+ Polypost Polythene Pocket Peel & Seal Clear 38mic (Qty 1000) 240mm x 320mm

Boxed: £64.90
Unit: £0.65

C4+ Mailer Gummed Window White 100gsm Envelopes (Qty 250) 240mm x 330mm

Boxed: £36.25
Unit: £0.36

C4+ Mailer Gummed White 100gsm Envelopes (Qty 250) 240mm x 330mm

Boxed: £34.65
Unit: £0.35

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C4+ Gloss Yellow Padded Bubble Envelopes (Qty 100) 240mm x 340mm

Boxed: £79.15
Unit: £0.79 £85.50

C4+ Gloss Red Padded Bubble Envelopes (Qty 100) 240mm x 340mm

Boxed: £78.15
Unit: £0.79

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C4 White String & Washer Envelopes (Qty 100) 229mm x 324mm

Boxed: £83.40
Unit: £0.83

C4 White Recycled 120gsm Peel & Seal Window Envelopes (Qty 500) 229mm x 324mm

Boxed: £76.55
Unit: £0.77

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C4 White Recycled 120gsm Peel & Seal Envelopes (Qty 250) 229mm x 324mm

Boxed: £37.05
Unit: £0.37

C4 White Premium Ultra Window Wallet 120gsm Peel & Seal Envelopes (Qty 250) 229mm x 324mm

Boxed: £37.30
Unit: £0.37

C4 White Luxury Pocket 180gsm Peel & Seal Envelopes (Qty 200) 229mm x 324mm

Boxed: £51.90
Unit: £0.52

C4 White Gusset Window Pocket 140gsm Peel & Seal Envelopes (Qty 125) 324mm x 229mm x 25mm

Boxed: £25.50
Unit: £0.26

C4 White Gusset Pocket 140gsm Peel & Seal Envelopes (Qty 125) 324mm x 229mm x 25mm

Boxed: £24.65
Unit: £0.25

C4 White Board Back 120gsm Peel & Seal Pocket Envelopes (Qty 125) 229mm x 324mm

Boxed: £28.95
Unit: £0.29

C4 White Board Back 120gsm Peel & Seal Pocket Envelopes (Qty 125) 229mm x 324mm

Boxed: £29.90
Unit: £0.30

C4 White Board Back 120gsm Gusset Peel & Seal Pocket Envelopes (Qty 125) 324mm x 229mm x 50mm

Boxed: £50.50
Unit: £0.51

C4 White 95gsm Window Self Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £15.80
Unit: £0.16

C4 White 95gsm Self Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £15.25
Unit: £0.15

C4 White 90gsm Window Self Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £15.25
Unit: £0.15

C4 White 90gsm Self Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £14.70
Unit: £0.15

C4 White 90gsm Self Seal Pocket Envelopes (Qty 25) 229mm x 324mm

Boxed: £2.75
Unit: £0.17

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C4 White 350gsm Board Peel & Seal Envelopes (Qty 100) 229mm x 324mm

Boxed: £31.85
Unit: £0.32

C4 White 120gsm Window Self Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £22.45
Unit: £0.22

C4 White 120gsm Self Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £21.65
Unit: £0.22

C4 White 100gsm Window Self Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £16.30
Unit: £0.16

C4 White 100gsm Window Gummed Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £19.20
Unit: £0.19

C4 White 100gsm Self Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £15.85
Unit: £0.16

C4 White 100gsm Peel & Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £18.95
Unit: £0.19

C4 White 100gsm Peel & Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £20.95
Unit: £0.21

C4 White 100gsm High Window Peel & Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £19.70
Unit: £0.20

C4 White 100gsm Gummed Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £18.35
Unit: £0.18

C4 Vellum Wove 120gsm Peel and Seal Window Pocket Envelopes (Qty 250) 324mm x 229mm

Boxed: £55.65
Unit: £0.56

C4 Vellum Wove 120gsm Peel & Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £38.00
Unit: £0.38

C4 Vellum Wove 120gsm Peel & Seal Pocket Envelopes (Qty 20) 229mm x 324mm

Boxed: £6.15
Unit: £0.06

C4 Vellum Laid 120gsm Peel & Seal Pocket Envelopes (Qty 250) 229mm x 324mm

Boxed: £67.90
Unit: £0.68

C4 Vellum Laid 120gsm Peel & Seal Pocket Envelopes (Qty 20) 229mm x 324mm

Boxed: £14.70
Unit: £0.15

C4 Envelopes FAQs

C4 envelopes are an excellent choice for A4 documents such as product catalogues, contracts, and marketing materials. With the option for coloured C4 envelopes, we also offer the chance to enhance your brand identity. Bulk purchasing options are available for businesses seeking efficient, high-volume packaging solutions. For more information, take a look at our FAQs below.

What size is a C4 envelope?

C4 envelopes are fit for A4 size paper, measuring 229x324mm. This makes C4 a perfect fit for sending documents, brochures and marketing literature.

Does a C4 envelope need a large stamp?

C4 envelopes measure 324mm by 229mm. This size is larger than normal and means that they can't always be posted using a regular postage stamp. It may be classed as a 'large letter', meaning you would generally have to take them to a post office to have them weighed and sent.

What our customers say

Consistently excellent quality products and their turnaround time and customer service is brilliant

Have been using All Colour Envelopes for years and they have never let me down. Our business couldn't survive without them.

Actually really impressed Fantastic prices, and the quality of the products we have received are exceptional.