Envelopes: DL & C4 (A4 size)

Business envelopes in bulk packs — DL (plain or window) for letters and invoices, and C4 (A4 size) for unfolded documents, reports and certificates.

Envelopes & Stationery FAQs

What envelope size fits A4 paper?

A C4 envelope (229 x 324 mm) takes an unfolded A4 sheet. A C5 envelope takes A4 folded once, and a DL envelope (110 x 220 mm) takes A4 folded into three.

When should I use window envelopes?

Use window envelopes for invoices and statements that already print the address in the right position, so you do not have to address each envelope by hand.

Envelopes in Kenya

Envelope sizing follows the C series, which is built so that each C size holds the matching A size. A C4 envelope takes an unfolded A4 sheet, C5 takes A4 folded once, and DL takes A4 folded into three — the standard for letters and invoices.

Window or plain

Window envelopes save you addressing them when the letter already carries the address in the right position, which matters for statement and invoice runs. Board-backed envelopes protect certificates and photographs from bending in transit.