White paper envelope with imprint and self-adhesive strip C4 229x324

📩 White paper envelope with C4 print (229×324 mm) - self-adhesive with a strip closure (HK), 90 g/m²

Do you need a C4 format envelope that will secure A4 sheets without folding, protecting them from unwanted viewing? White paper envelope C4 (229×324 mm) with print and self-adhesive strip closure (HK) perfectly meets these expectations. The weight of 90 g/m² gives it high durability, and a special print layer guarantees full discretion of important documents.

🌟 Key benefits of the C4 envelope (229×324 mm) with HK strip

• C4 Format: perfect for sending A4 documents without folding, maintaining a professional appearance of correspondence.
• Self-adhesive strip (HK): just peel off the protective strip and press the flap - one quick action instead of moistening or using adhesive tape.
• 90 g/m² weight: offset paper of appropriate stiffness, protects content during transport and postal handling.
• Internal print: prevents the contents from being visible, thus sensitive data remains completely confidential.
• White color, without a window: a smooth surface ensures aesthetics and freedom of addressing (print, sticker, stamp).
• Eco-friendly solution: fully paper construction - easy to recycle, environmentally friendly.

📄 Use of a white C4 envelope with inside printing, 90 g/m²

• 📑 Official and office documents: sending invoices, contracts, reports - A4 sheets do not require additional folding.
• 📢 Promotional materials: brochures, folders, catalogs - will reach the recipient in perfect condition, maintaining the complete format.
• 📂 Scientific papers, graphic projects: safe transport of sheets for review or presentation, ensures confidentiality of data.
• 🏠 Private correspondence: photos, diplomas, A4 format cards - without the risk of creasing or damage.

💼 Who will appreciate the C4 paper envelope (HK, with inside printing)?

• 🏢 Offices, administrations, institutions: large mass correspondence, high packing efficiency thanks to the HK strip.
• 🏫 Schools, universities: protection of documents (certificates, theses) from unauthorized access or destruction.
• 🛍️ Online stores, e-commerce: attaching instructions, invoices, certificates to orders without the need to fold sheets.
• 🎨 Creative agencies: sending projects in full format, with additional privacy protection.

⚖️ Why choose an envelope with a self-adhesive strip and underprint?

The HK strip provides safe and fast closing, minimizing the risk of accidental opening or damage. Internal printing guarantees discretion, especially with sensitive correspondence (financial, legal or personal data). Thanks to the 90 g/m² envelope weight, the envelope is stiff and resistant to tearing, which increases the comfort and security of shipping.

🎨 Personalization and other possibilities

Do you want to give your correspondence a unique character? We offer printing of logos, slogans or other information directly on the envelope. You might also want to check out:

• Custom sized boxes - design packaging perfectly suited to your products and requirements.
• Printed boxes - give your packages a unique look to strengthen your brand image at the first contact with the recipient.

Thanks to such personalised details, your brand will stand out in any situation.

💬 Need an individual offer or larger quantities?

Use the PRO form to order wholesale quantities of envelopes or get a dedicated offer for personalised projects. We will be happy to advise on the selection of the best solutions for your business!

White paper envelope with C4 print (229×324 mm), 90 g/m², with self-adhesive strip (HK) - opt for professionalism, discretion and convenience in everyday correspondence!