Envelopes MAILmedia Securitex C4 White – pack of 100, size C4, security lining

MAILmedia Securitex C4 white envelopes come in a pack of 100 and are sized to hold A4 documents without folding. Each envelope has a security lining that obscures contents from view, a standard straight flap closure, and a clean white exterior suitable for professional correspondence. The envelopes are designed for postal use, office mailing and document storage, combining simple handling with basic protection against casual inspection.

Advantages

These C4 envelopes provide full A4 capacity so documents remain flat and presentable. The integrated security lining reduces the risk of sensitive information being seen through the paper while preserving legibility of addressing on the outside. A plain white finish ensures a neutral, professional appearance that works with printed or handwritten addresses and labels. The 100-pack supply supports routine mailing needs and helps maintain consistent stationery inventory.

Suitable for

• Sending invoices, contracts and official letters without folding
• Mailing brochures, catalogs and promotional sheets
• Internal document distribution and archiving of A4 paperwork
• Postal dispatch where basic content privacy is required

Key specifications

• Format: C4 (suitable for A4 documents without folding)
• Quantity: 100 envelopes per pack
• Colour: white exterior
• Security feature: internal security lining to obscure contents
• Closure type: standard straight flap
• Intended use: mailing, office correspondence, archiving

How to use

Insert A4 documents directly into the envelope ensuring they sit flat to avoid creasing. If required, add a label or write the recipient address on the front and place postage in the top-right corner according to the postal service rules. Close the straight flap securely; if extra protection is needed, use tape or an adhesive strip. Store unused envelopes in a dry, flat place to prevent bending or moisture damage.

Usage recommendations

For improved confidentiality, combine the security-lined envelope with an inner sheet that masks sensitive text near the edges. When sending important or legal documents, use registered or tracked postal services and consider additional sealing for transport security.