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)

    $1.96 $1.96 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: $88.20 Per Bundle ($1.76/ea)

    2 - 5 Bundles: $78.40 Per Bundle ($1.57/ea)

    6 - 9 Bundles: $68.60 Per Bundle ($1.37/ea)

    10+ Bundles: $58.80 Per Bundle ($1.18/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)

    $1.86 $1.86 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: $83.70 Per Bundle ($1.67/ea)

    2 - 5 Bundles: $74.40 Per Bundle ($1.49/ea)

    6 - 9 Bundles: $65.10 Per Bundle ($1.30/ea)

    10+ Bundles: $55.80 Per Bundle ($1.12/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)

    $2.79 $2.79 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: $125.55 Per Bundle ($2.51/ea)

    2 - 5 Bundles: $111.60 Per Bundle ($2.23/ea)

    6 - 9 Bundles: $97.65 Per Bundle ($1.95/ea)

    10+ Bundles: $83.70 Per Bundle ($1.67/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)

    $2.64 $2.64 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: $118.80 Per Bundle ($2.38/ea)

    2 - 5 Bundles: $105.60 Per Bundle ($2.11/ea)

    6 - 9 Bundles: $92.40 Per Bundle ($1.85/ea)

    10+ Bundles: $79.20 Per Bundle ($1.58/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)

    $5.39 $5.39 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: $48.51 Per Bundle ($4.85/ea)

    10 - 29 Bundles: $43.12 Per Bundle ($4.31/ea)

    30 - 49 Bundles: $37.73 Per Bundle ($3.77/ea)

    50+ Bundles: $32.34 Per Bundle ($3.23/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)

    $5.21 $5.21 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: $46.89 Per Bundle ($4.69/ea)

    10 - 29 Bundles: $41.68 Per Bundle ($4.17/ea)

    30 - 49 Bundles: $36.47 Per Bundle ($3.65/ea)

    50+ Bundles: $31.26 Per Bundle ($3.13/ea)