Large Mailing Boxes

Large cardboard mailing boxes for posting bulkier items, multi-product orders, and larger e-commerce shipments across Australia. The biggest mailer in our range — when you need more room than a standard mailer but don’t need a full packing box. Available in white and kraft brown. Buy large mailing boxes online — Australian made with delivery Australia-wide.

More Room Without the Bulk

Standard mailers top out at book-sized items. Large mailing boxes bridge the gap — enough internal space for clothing bundles, multi-item orders, bulky homewares, and oversized documents without stepping up to a full carton.

Australian Made & 100% Recyclable

Manufactured in Australia from sustainably sourced paper. 100% recyclable with a minimum 50% recycled content. Ships and stores flat.

Large Mailing Boxes

Australian Manufacturing

Buy direct from the source & of the highest quality.

Instant Online Ordering

Build your custom box online with transparent, real-time pricing. Buy online.

Fast Delivery

We'll get your packaging to you when you need it, so you can meet your deadlines with confidence.

5-Star Rated

With hundreds of satisfied customers, we're the trusted local packaging partner you can rely on.

Large Mailing Boxes

6 results

  • A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 50H (mm)A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 50H (mm)A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 50H (mm)A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 50H (mm)A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 50H (mm)

    A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 50H (mm)

    $1.78 $1.78 ea
    W: 225mm H: 50mm L: 310mm
    A4 Self-locking mailing box. 2mm White, 310 x 225 x 50mm. No tape needed. Flat-packed for storage. SKU: DCB-A4.50-White.
    50
    Add to cart

    Pricing

    Bundle Size: 50 pieces

    1 Bundle: $80.10 Per Bundle ($1.60/ea)

    2 - 5 Bundles: $71.20 Per Bundle ($1.42/ea)

    6 - 9 Bundles: $62.30 Per Bundle ($1.25/ea)

    10+ Bundles: $53.40 Per Bundle ($1.07/ea)

  • A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 50H (mm)A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 50H (mm)A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 50H (mm)A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 50H (mm)A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 50H (mm)

    A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 50H (mm)

    $1.69 $1.69 ea
    W: 225mm H: 50mm L: 310mm
    A4 Self-locking mailing box. 2mm Recycled Brown, 310 x 225 x 50mm. No tape needed. Flat-packed for storage. SKU: DCB-A4.50-Brown.
    50
    Add to cart

    Pricing

    Bundle Size: 50 pieces

    1 Bundle: $76.05 Per Bundle ($1.52/ea)

    2 - 5 Bundles: $67.60 Per Bundle ($1.35/ea)

    6 - 9 Bundles: $59.15 Per Bundle ($1.18/ea)

    10+ Bundles: $50.70 Per Bundle ($1.01/ea)

  • A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 100H (mm)A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 100H (mm)A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 100H (mm)A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 100H (mm)A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 100H (mm)

    A4 Self-Locking Mailing Box | 2mm White | 310L x 225W x 100H (mm)

    $2.54 $2.54 ea
    W: 225mm H: 100mm L: 310mm
    A4 Self-locking mailing box. 2mm White, 310 x 225 x 100mm. No tape needed. Flat-packed for storage. SKU: DCB-A4.100-White.
    50
    Add to cart

    Pricing

    Bundle Size: 50 pieces

    1 Bundle: $114.30 Per Bundle ($2.29/ea)

    2 - 5 Bundles: $101.60 Per Bundle ($2.03/ea)

    6 - 9 Bundles: $88.90 Per Bundle ($1.78/ea)

    10+ Bundles: $76.20 Per Bundle ($1.52/ea)

  • A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 100H (mm)A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 100H (mm)A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 100H (mm)A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 100H (mm)A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 100H (mm)

    A4 Self-Locking Mailing Box | 2mm Recycled Brown | 310L x 225W x 100H (mm)

    $2.40 $2.40 ea
    W: 225mm H: 100mm L: 310mm
    A4 Self-locking mailing box. 2mm Recycled Brown, 310 x 225 x 100mm. No tape needed. Flat-packed for storage. SKU: DCB-A4.100-Brown.
    50
    Add to cart

    Pricing

    Bundle Size: 50 pieces

    1 Bundle: $108.00 Per Bundle ($2.16/ea)

    2 - 5 Bundles: $96.00 Per Bundle ($1.92/ea)

    6 - 9 Bundles: $84.00 Per Bundle ($1.68/ea)

    10+ Bundles: $72.00 Per Bundle ($1.44/ea)

  • A3 Self-Locking Mailing Box | 3mm White | 430L x 310W x 100H (mm)A3 Self-Locking Mailing Box | 3mm White | 430L x 310W x 100H (mm)A3 Self-Locking Mailing Box | 3mm White | 430L x 310W x 100H (mm)A3 Self-Locking Mailing Box | 3mm White | 430L x 310W x 100H (mm)A3 Self-Locking Mailing Box | 3mm White | 430L x 310W x 100H (mm)

    A3 Self-Locking Mailing Box | 3mm White | 430L x 310W x 100H (mm)

    $4.90 $4.90 ea
    W: 310mm H: 100mm L: 430mm
    A3 Self-locking mailing box. 3mm White, 430 x 310 x 100mm. No tape needed. Flat-packed for storage. SKU: DCB-A3.100-White.
    10
    Add to cart

    Pricing

    Bundle Size: 10 pieces

    5 - 9 Bundles: $44.10 Per Bundle ($4.41/ea)

    10 - 29 Bundles: $39.20 Per Bundle ($3.92/ea)

    30 - 49 Bundles: $34.30 Per Bundle ($3.43/ea)

    50+ Bundles: $29.40 Per Bundle ($2.94/ea)

  • A3 Self-Locking Mailing Box | 3mm Kraft Brown | 430L x 310W x 100H (mm)A3 Self-Locking Mailing Box | 3mm Kraft Brown | 430L x 310W x 100H (mm)A3 Self-Locking Mailing Box | 3mm Kraft Brown | 430L x 310W x 100H (mm)A3 Self-Locking Mailing Box | 3mm Kraft Brown | 430L x 310W x 100H (mm)A3 Self-Locking Mailing Box | 3mm Kraft Brown | 430L x 310W x 100H (mm)

    A3 Self-Locking Mailing Box | 3mm Kraft Brown | 430L x 310W x 100H (mm)

    $4.74 $4.74 ea
    W: 310mm H: 100mm L: 430mm
    A3 Self-locking mailing box. 3mm Kraft Brown, 430 x 310 x 100mm. No tape needed. Flat-packed for storage. SKU: DCB-A3.100-Brown.
    10
    Add to cart

    Pricing

    Bundle Size: 10 pieces

    5 - 9 Bundles: $42.66 Per Bundle ($4.27/ea)

    10 - 29 Bundles: $37.92 Per Bundle ($3.79/ea)

    30 - 49 Bundles: $33.18 Per Bundle ($3.32/ea)

    50+ Bundles: $28.44 Per Bundle ($2.84/ea)