📦 Brown flat postal box GBKA4 (350x250x20 mm) – perfect for the safe shipment of A4 documents!

Are you looking for a practical, sturdy box for shipping documents, books, catalogs, or other flat items in A4 format? Meet the GBKA4 box – a stylish cardboard box with dimensions of 350x250x20 mm, made from high-quality 3-layer corrugated cardboard (E wave). Thanks to the FEFCO 427 design, you can quickly fold it without using adhesive tape. The perfect solution for online stores and postal and parcel locker shipments. 📬✨

🌟 Why choose the GBKA4 box?

• 🚀 Quick assembly without tape: The FEFCO 427 design allows for easy and quick preparation of shipments.
• 💪 Durable 3-layer cardboard: E wave provides high protection of contents.
• ♻️ Eco-friendly solution: Biodegradable, fully recyclable.
• 📦 Space-saving: Delivered flat - convenient for storage.
• 🎁 Versatility: Perfect for shipping A4 documents, books, brochures, small electronics, and other items.

📬 The perfect shipping box – Polish Post, Deutsche Post, and InPost Parcel Lockers

The GBKA4 box (350x250x20 mm) meets the standards of popular carriers:

• 📮 Polish Post – size B: the box fits perfectly into size B (max. 325×230×60 mm, weight up to 2 kg).
• 🇩🇪 Deutsche Post – Großbrief: the box meets the requirements of Großbrief (max. 353×250×20 mm, weight up to 500 g).
• 📦 InPost Parcel Machines – size A: the box perfectly fits into size A (max. 640×380×80 mm).

With the GBKA4 box, your shipments are safe, fast and always in line with carrier standards! 🚀✨

📌 Advantages of the FEFCO 427 design:

• ✅ Reliable closure without tape: special flaps secure the contents of the package.
• 🚀 Express assembly: quick preparation of packages.
• 🎁 Professional look: elegant cardboard improves the image of your brand.
• ♻️ Eco-friendliness and savings: no need to use tape reduces waste and packing costs.

📃 Grammage 360 g/m² – solidity at a minimal weight

Cardboard with a weight of 360 g/m² provides excellent protection of the contents while maintaining a low weight of the box.

🔎 E-flute - lightness and durability

• Low flute height (approx. 1.5 mm): aesthetic appearance of shipments.
• Resistance to crushing: protects products during transport.
• Lightweight design: reduces transport and storage costs.

📦 Recommended fillers for the GBKA4 box:

Take care of the protection and aesthetics of your shipments with our eco-friendly solutions:

• 🌿 Skropak - ecological puffs - biodegradable filler effectively protecting products.
• 📜 Wrapping paper – a universal way to secure your shipment.
• 🎀 SilkPaper decorative tissue – elegant tissue for packing premium products.
• 📖 Check out our blog – you'll find practical packaging tips here.

🎨 Do you need custom-sized or custom-printed boxes?

Stand out with personalized packaging tailored to your needs:

• Custom size boxes – perfectly fitted boxes for your products.
• Boxes with logo printing – packaging with individual print strengthening the image of your brand.

💬 Do you need more or different products?

If you are interested in larger orders, packages of different dimensions or products outside our standard offer, use the PRO form. We will prepare an individual offer especially for you!