A4 350x250mm 400gsm (100pcs) - Kraft Rigid Cardboard Mailer Envelopes

Ship your important items with confidence using our A4 Kraft Rigid Cardboard Mailer Envelopes (350x250mm, 400gsm). Made from premium heavy-duty cardboard, these mailers are designed to keep your documents, artwork, photos, books, and other flat items safe during postage. The rigid 400gsm thickness prevents bending, creasing, or damage, while the kraft brown finish provides a professional, eco-friendly look. Perfect for businesses, offices, online sellers, and personal use.

Usage & Details:

• Size: 350x250mm – fits A4 documents, photos, prints, certificates, magazines, and books

• Material: 400gsm rigid kraft cardboard for extra strength and durability

• Color: Natural brown kraft finish – eco-friendly and professional appearance

• Quantity: 100pcs per pack – ideal for bulk mailing and business use

• Protection: Rigid board prevents bending, folding, and corner damage during shipping

• Applications:

  • Securely mailing A4 documents & certificates

  • Protecting art prints, photos, and posters

  • Shipping catalogues, brochures, and magazines

  • Safe storage of important papers

Strong, lightweight, and eco-conscious, these rigid kraft mailer envelopes are the perfect solution for professional shipping needs.