Brown solid cardboard envelope TP390 430x580

📦 Brown solid board envelope TP390 (430×580 mm, B3+ format) – rigid protection for large, flat shipments!

Do you need an exceptionally rigid envelope that holds large documents, posters or catalogues and delivers them in flawless condition? TP390 (430×580 mm) is a solid board envelope with a grammage of as much as 550 g/m² – one of the highest in our range – designed for companies, offices and online stores shipping large, flat materials. It stands out for its very high strength, easy recycling and a natural, brown finish that underlines the solid character of the shipment. All our solid board envelopes carry the FSC certificate, guaranteeing responsible sourcing of the raw material.

🌟 Construction details and advantages of the TP390 (430×580 mm)

• Extreme rigidity: solid board 550 g/m² protects against crushing and deformation even in a large format and during longer transport.
• Content protection: the rigid structure keeps large documents, posters or catalogues perfectly flat – with no bent corners.
• Ecology and FSC certificate: the envelope is 100% paper, with no plastic elements and fully recyclable – a good choice for environmentally conscious companies.
• Professional appearance: brown board looks solid and aesthetic, underlining the quality of the shipment at first glance.
• Quick closure (self-adhesive strip): lets you close the envelope without adhesive tape, which speeds up packing.
• Large B3+ format (430×580 mm): designed for sheets and materials exceeding A3, with no need for bending or folding.

📦 What can you ship in the TP390 envelope?

• 📑 Large documents, designs, printouts: fit without creasing in a format larger than A3.
• 📚 Books, magazines, catalogues, albums: the stiffened form prevents bent corners and creased covers.
• 🖼️ Posters, graphics, large-format photos: the flat construction protects them from rolling up and damage.
• 🗂️ Boards, maps, POS materials: safe transport of large, rigid sheets.
• 💿 Discs, games, accessories: the rigid packaging protects against cracking and crushing.

💼 Who are solid board envelopes for?

• 🛒 E-commerce: stores with posters, calendars, larger books and accessories that value solid, eco-friendly packaging.
• 🏢 Offices, public authorities, law firms: shipping large documents and archival materials, where protection and aesthetics matter.
• 🎨 Creative agencies, publishers, printing houses: graphic designs, print samples, advertising posters.
• 🏭 Technical sector: documentation, manuals, drawings and technical maps in large format.

⚖️ Solid board envelopes vs bubble envelopes – when to choose each?

Both options have their advantages, and the decision depends on the type of product and your priorities:

➡️ When is a solid board envelope worth choosing?

• Creasing must be avoided: documents, graphics, diplomas, boards.
• Ecology matters: no film, 100% paper packaging that is recyclable (FSC).
• Professional appearance: brown board emphasises solidity and attention to detail.
• Flat products with a regular shape: magazines, catalogues, posters.

➡️ When is a bubble envelope the better choice?

• Shock-sensitive items: electronics, glass or small, delicate parts.
• Irregular shape: bubble film adapts better to the object.
• Very low unit cost: classic bubble envelopes can be cheaper.
• Ecology as a lower priority: film makes recycling more difficult.

Many companies use both solutions, depending on their needs and the type of goods being shipped.

🚀 Other sizes and customization

A standard envelope doesn't fit your product? Use our interactive configurators and create tailor-made packaging:

• Custom boxes – adjust the size, type of board and quantity, fully online.
• Printed boxes – add a logo, graphics or an advertising slogan to your packaging.

💬 Have questions or need an individual offer?

Planning a larger order or looking for non-standard dimensions? Use the PRO form and describe your needs – together we'll choose the perfect packaging for your business.

TP390 (430×580 mm) – go for rigidity, ecology and professionalism when shipping large, flat parcels!