White B4 paper envelope 250x353

📩 White B4 (250×353 mm) paper envelope – self-adhesive closure (SK), 90 g/m²

Do you need an envelope that can fit A4 documents with room to spare or larger materials, while also providing easy sealing and a professional look? White B4 (250×353 mm) paper envelope with SK closure (self-adhesive) is the perfect solution for businesses, offices and individuals who appreciate functionality and quality. Made from offset paper with a weight of 90 g/m², it remains rigid, durable and ready to protect your shipments.

🌟 Key features of the B4 (250×353 mm) envelope

• B4 Format: larger than C4, allows A4 sheets (also in folders) or folded A3 sheets to fit. The larger size provides more space, protecting documents from creasing.
• SK Closure (self-adhesive): two layers of glue (on the flap and on the body of the envelope). By pressing the flap to the edge, you get an instant, permanent closure, without moistening or tearing the strip.
• Weight 90 g/m²: sturdy offset paper guarantees appropriate stiffness and helps protect the shipment from damage, while also providing a professional appearance.
• No underprint: the inside of the envelope is smooth and bright, which can facilitate personalization or placing additional information inside.
• White color, without window: freedom in addressing - handwritten note, stamp, sticker or print - choose what best suits your correspondence.
• Eco-friendly paper construction: the whole thing is recyclable, in line with the eco-friendly standards of companies and institutions.

📄 Use of the white B4 envelope (SK, 90 g/m²)

• 📑 A4 format documents: reports, offers, contracts or invoices - B4 provides extra slack around the sheets, preventing damage.
• 🎨 Artwork, portfolio: A3 sheets (folded in half) or numerous graphic materials that require more space.
• 📂 Folders with documents: B4 can easily accommodate documents packed in a thin folder, providing a neat appearance of the shipment.
• 🔖 Marketing materials, catalogs, brochures: an excellent choice for wanting to ship extensive advertising materials in an undamaged state.

💼 Who can benefit from the B4 paper envelope (90 g/m², SK)?

• 🏢 Offices and institutions: sending documents to clients, offices or other branches, with the convenience of self-adhesive closure and more space.
• 🏠 Private individuals: sending large files of notes, photos or other materials in A4 or A3 format (folded), without the need for crumpling.
• 🎨 Creative and design agencies: portfolios, design mood boards, graphics - everything in one place, without creases.
• 🛒 Online stores: including instructions, advertisements, brochures in A4 format, solidly and aesthetically packaged.

⚖️ Why choose a B4 envelope with self-adhesive closure (SK)?

Larger size B4 provides additional space and convenience, especially when you need to send extensive documents or folders. Meanwhile, the SK closure guarantees quick, hassle-free handling - the lack of a security strip (as in HK) means only pressing the flap for certain closure. It's the perfect compromise between ease of use and durability of sealing.

🎨 Personalization and other options

If you want to highlight your correspondence, order a company print on envelopes or choose packaging with individual graphics. It's also worth checking out:

• Custom-sized boxes – design a package tailored to the needs of your business on your own.
• Printed boxes – create unique packaging, supporting the image and marketing of your brand.

Thanks to this, your shipments will have a consistent and professional look already at the delivery stage.

💬 Need larger quantities or custom solutions?

We invite you to use the PRO form. We will be happy to help adjust envelopes and packaging to your individual requirements, supporting the success of your correspondence and shipping.

White paper envelope B4 (250×353 mm), 90 g/m², self-adhesive closure (SK) – choose convenience, durability and elegance for shipping larger formats now!