A C4 envelope measures 229 × 324 mm and fits A4 sheets without folding keeping documents clean and professional. Many businesses use printed C4 envelope and custom C4 envelope for contracts, legal papers, certificates, reports, brochures, catalogues and corporate communication. Options like C4 white envelopes, C4 brown envelopes and C4 coloured envelopes suit different needs, while C4 hardback envelopes provide extra protection. Features like C4 envelope peel and seal also make handling quick and convenient. Why Choose C4 Envelopes? Not all envelopes are the same. C4 envelopes stand out for their practicality and professional appeal. 1. Perfect Size for A4 Documents: C4 envelope fit A4 sheets without folding making them ideal for printed and custom designs while keeping documents neat and easy to handle. 2. Professional First Impression: A clean design enhances corporate communication and helps your brand stand out before the envelope is opened. 3. Ideal for Business Use: From invoices and reports to contracts and brochures they handle everyday business needs with ease. 4. Versatile Design Options: Choose from C4 white, brown, coloured or black options. Features like peel and seal add convenience, while hardback styles provide extra protection.