Plain Envelope Sizes
Choose From Over 80 Sizes
See below over 80 envelope sizes we have available today here in the UK for next day delivery.
All the envelopes you see are available to buy online by the box to save you even more.
As a rough guide the 4 most common trpes of envelope are:
C6 114 x 162mm - postcard size
DL 110 x 220mm - standard letterbox size
C5 162 x 229mm - half a sheet of A4 size paper
C4 324 x 229mm - a full sheet of A4 size paper
Refine Search
- 70 x 100mm
- 80 x 215mm
- Standard C7 - 82 x 113mm
- 89 x 152mm
- 94 x 124mm
- 94 x 143mm
- 98 x 67mm
- 100 x 100mm
- 102 x 146mm
- 102 x 216mm
- 105 x 216mm
- 106 x 206mm
- 108 x 102mm
- 108 x 159mm
- STANDARD DL - 110 x 220mm
- 111 x 111mm
- 111 x 232mm
- STANDARD C6 - 114 x 162mm
- Oversize DL - 114 x 229mm
- Oversize DL - 114 x 235mm
- 120 x 120mm
- 121 x 171mm
- Oversize DL - 121 x 235mm
- 124 x 89mm
- 125 x 125mm
- 125 x 175mm
- 127 x 190mm
- 127 x 310mm
- 130 x 130mm
- 133 x 185mm
- 133 x 197mm
- 140 x 140mm
- 143 x 203mm
- 146 x 146mm
- 152 x 216mm
- 152 x 315mm
- 155 x 155mm
- 159 x 159mm
- 159 x 210mm
- Undersize C5 - 155 x 220mm
- STANDARD C5 - 162 x 229mm
- Oversize C5 - 162 x 235mm
- Oversize C5 - 162 x 238mm
- 165 x 165mm
- 170 x 170mm
- 175 x 305mm
- STANDARD C4 - 324 x 229mm
- 330 x 248mm
- 330 x 273mm
- 330 x 279mm
- 330 x 330mm
- 335 x 230mm
- 340 x 340mm
- 350 x 250mm
- 352 x 229mm
- Standard B4 - 352 x 250mm
- 381 x 152mm
- 381 x 254mm
- 394 x 318mm
- 400 x 280mm
- 406 x 305mm
- 430 x 162mm
- Oversize C3 - 444 x 368mm
- Standard C3 - 457 x 324mm
- 460 x 185mm
- 470 x 330mm
- 508 x 381mm
- 525 x 460mm
- Standard C2 - 625 x 444m
Mailer Gummed High Window White 310×238mm 100gsm
Wholesale Mailer Envelopes... Premium quality mailer envelopes for office use. Cheape..
£39.99
Board Back Pocket Peel and Seal Manilla 318×267mm 120gsm
Wholesale Board Envelopes... Premium quality board back envelopes for office use. Che..
£34.99
Pocket Gummed Manilla C4 324×229mm 80gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy online for ..
£23.99
Pocket Gummed Manilla C4 324×229mm 115gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy onlin..
£24.99
Pocket Gummed Window Manilla C4 324×229mm 90gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy online ..
£26.99
Pocket Gummed White C4 324×229mm 100gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy online ..
£32.99
Pocket Gummed Window White C4 324×229mm 100gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy onl..
£28.99
Mailer Gummed Manilla C4 229×324mm 100gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy online ..
£23.99
Mailer Gummed Window Manilla C4 229×324mm 100gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy onl..
£24.99
Mailer Gummed White C4 229×324mm 100gsm ES
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy online for your..
£34.99
Mailer Gummed Window White C4 229×324mm 100gsm ES
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy online for ..
£30.99
Pocket Self Seal Manilla C4 324×229mm 80gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy onlin..
£26.99
Pocket Self Seal Window Manilla C4 324×229mm 90gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy o..
£28.99
Pocket Self Seal White C4 324×229mm 90gsm ES
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy onl..
£28.99
Pocket Self Seal Window White C4 324×229mm 90gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy..
£29.99
Trade Pocket Self Seal White C4 324×229mm 90gsm
Commercial Budget Envelopes Excellent quality cheap envelopes for office use. Buy..
£30.99
Pocket Self Seal Natural White C4 324×229mm 90gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy..
£38.99
Pocket Self Seal White C4 324×229mm 100gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. Buy..
£34.99
Trade Pocket Self Seal Window White C4 324×229mm 90gsm
Commercial Budget Envelopes Excellent quality cheap envelopes for office use. ..
£32.99
Pocket Self Seal Window Natural White C4 324×229mm 90gsm
Commercial Envelopes... Excellent quality cheap envelopes for office use. ..
£36.99