Brown Mailing Boxes - Extra Large

Optimise your shipping operations with our extra-large brown self-locking mailing boxes, thoughtfully engineered for businesses requiring spacious, professional packaging that delivers both reliability and cost-effectiveness. These FSC certified kraft brown shipping boxes feature advanced self-locking technology that secures your products without tape, while maintaining the classic, professional appearance that customers trust and recognise.

Built from premium single-wall B-flute cardboard, our extra-large brown mailing boxes provide exceptional value and performance for high-volume eCommerce operations.Our self-locking mailing boxes is designed to comfortably fit our premium magnetic gift boxes for no-stress premium hampers. 

Please note: As part of the nature of this product, cardboard can sometimes crack along the fold line.

• Extra-Large Capacity - 44cm x 36cm x 9cm internal dimensions
• Professional Self-Locking System - Secure closure without tape requirements
• Classic Brown Kraft Finish - Professional and universally trusted appearance
• FSC Certified Materials - Environmentally responsible packaging choice
• Premium B-Flute Construction - 3mm thick cardboard for reliable protection
• 100% Recyclable Design - Sustainable packaging solution
• Reusable Durability - Multiple use capability for cost efficiency
• Flat-Packed Delivery - Space-optimised storage and shipping logistics
• Easy to Assemble - watch the video!
• Primary Usage Applications
  • Bulk Order Fulfilment - Large quantity eCommerce shipment packaging
  • Wholesale Product Distribution - B2B shipping and fulfilment solutions
  • Industrial Product Shipping - Heavy-duty item protection and presentation
  • Corporate Supply Packaging - Business equipment and supply distribution
  • Multi-Item Order Consolidation - Combined product shipment optimisation
  • Seasonal Inventory Shipping - Holiday and promotional bulk packaging
  • Return Processing Systems - Customer return and exchange packaging
  • Document and File Storage - Archive and storage organisation solutions

What are the exact internal dimensions of the extra-large brown mailing box?

The internal measurements are 44cm length x 36cm width x 9cm height, providing substantial space for bulk orders and large product combinations while maintaining secure self-locking closure.

How reliable is the self-locking mechanism for heavy shipments?

The advanced self-locking flaps are engineered to handle substantial weight loads, creating a secure closure that maintains integrity throughout the shipping process without requiring additional tape or reinforcement.

Are these brown mailing boxes suitable for professional business shipping?

Yes, the classic kraft brown finish provides a professional, trusted appearance that works well for all business types, from small retailers to large corporations requiring reliable packaging solutions.

Can these extra-large boxes be reused for storage or shipping?

Absolutely, the durable single-wall B-flute construction and self-locking design make these boxes perfect for multiple uses, providing excellent value and supporting sustainable business practices.

What is the minimum order quantity for bulk purchasing of these cost-effective mailing boxes?

We offer flexible low minimum order quantities to support businesses of all sizes, from small operations needing occasional large shipments to high-volume enterprises requiring bulk packaging solutions.