📦 White solid cardboard envelope Lettpac B4 (250×353 mm) - strong protection and elegant appearance of your shipments!

Are you looking for a stiff, durable envelope that will accommodate larger documents, magazines or catalogs, and at the same time will look professional? Lettpac B4 (250×353 mm) is a white solid cardboard envelope with a grammage of 400 g/m², designed with companies, offices, and online stores in mind that want to ensure the highest packaging standard. It stands out with high durability, recyclability and a neat, white finish. All our solid cardboard envelopes have a FSC certificate, guaranteeing responsible sourcing of paper material.

🌟 Construction details and benefits of Lettpac B4 (250×353 mm)

• Durability and stiffness: solid cardboard 400 g/m² effectively protects the contents from creasing and deformation, even in demanding logistic conditions.
• Content protection: the stiff structure keeps documents, catalogs, or brochures in flat and safe form. If the envelope has widened sides, you can easily fit thicker publications.
• Eco-friendly materials (FSC): 100% paper, without plastic elements, suitable for recycling and environmentally friendly.
• Professional appearance: the white, smooth front of the cardboard gives the shipment an elegant character, enhancing the impression of quality from the first contact.
• Quick closure (self-adhesive strip): eliminates the need for additional tape, significantly speeding up the packing process.
• Tear strip: ensures easy and aesthetic opening - without the need for scissors or a knife.
• Format 250×353 mm (B4): designed for larger documents, magazines, files that do not fit in standard envelope formats.

📦 What can be sent in a Lettpac B4 (250×353 mm) envelope?

• 📑 Documents, folders, presentations: without creases and deformations - perfect for professional correspondence.
• 📚 Books, magazines, catalogs: rigid construction prevents damage to corners and covers.
• 💿 CDs, DVDs, Blu-ray, games: in boxes or bulk packaging, protected from cracking.
• 🖼️ Photos, graphics, prints: won't be rolled or damaged thanks to the flat form of the envelope.
• 🔌 Small electronics and accessories: flash drives, cables, chargers - securely closed in a rigid package.

💼 Who are solid cardboard envelopes for?

• 🛒 E-commerce: stores sending larger formats of books, discs, small electronics or accessories. The rigid envelope provides a professional appearance and often eliminates the need for additional fillers.
• 🏢 Offices, public offices, law firms: shipping important documents and correspondence. A solid package protects the content and emphasizes professionalism.
• 🎨 Creative agencies, publishing houses, printers: securing projects, trial prints, larger format advertising materials.
• 🏭 Technical and electronic industry: shipping instructions, small accessories and service documentation.
• 🔧 Service companies: accessories, repair documentation, parts - in an aesthetic, durable envelope and free from damage.

⚖️ Cardboard envelopes vs bubble envelopes - when to choose each one?

The choice between a solid cardboard envelope and a bubble envelope depends on the nature of the item being sent and priorities:

➡️ When should you choose a solid cardboard envelope?

• No bending allowed: crucial when sending documents, graphics, photos.
• Ecology and aesthetics: 100% paper packaging is easier to recycle and looks professional.
• The product has a regular, flat shape: books, discs, brochures.
• Prestige: white cardboard enhances the impression of attention to detail.

➡️ When will a bubble envelope be better?

• Sensitive to shocks contents: delicate electronics, glass or ceramic parts.
• Irregular shapes: bubble wrap conforms to the contour of the item.
• Lower cost for mass shipping: usually cheaper when bought in bulk.
• Ecology on the back burner: combining paper and foil makes recycling difficult.

Many companies use both solutions, adjusting the choice to a specific range.

🚀 Other sizes and personalization

Not every product - including the Lettpac B4 (250×353 mm) - fits into one packaging format? Try our interactive configurators to create packaging tailored to your business:

• Custom size boxes - determine the dimensions yourself, choose the type of cardboard and the quantity, without leaving your office.
• Boxes with print - add a logo, graphic or marketing slogan to enhance your brand's recognition.

💬 Do you have questions or need an individual offer?

Are you looking for a larger quantity of envelopes, a special format or custom solutions? Use the PRO form, describe your requirements to us, and together we will prepare the perfect packaging to support your business!

Lettpac B4 (250x353 mm) - opt for rigidity, ecology and professionalism in shipping your products!