C4 Envelopes
C4 envelopes measuring 324mm x 229mm, large enough to hold an unfolded A4 sheet. Available self-seal or gummed, windowed or non-windowed, in bulk boxes for documents and contracts.
C4 envelope options
Choose windowed C4 envelopes to show a printed address, or non-windowed for a clean front, in self-seal or gummed. Ideal for reports, contracts and unfolded A4 documents.
Why buy from Mailcoms
Mailcoms is a Royal Mail Authorised Inspector and has been trading since 2005, with fast UK delivery and free delivery over £40.
Frequently asked questions
What size is a C4 envelope?
324mm x 229mm, large enough for an unfolded A4 sheet.
Are windowed and non-windowed both available?
Yes, in both self-seal and gummed.
How fast is delivery?
Standard UK delivery is 3-5 working days and free on orders over £40, with a next working day option available.