Flat Boxes

NuPack Packaging’s flat pack boxes are the ideal solution for shipping smaller items while maintaining the reliability of more robust packaging options. These flat boxes are perfect for slim items like mobile phones, books, and DVDs.

Constructed from lightweight single-wall cardboard, these boxes feature a pristine white finish that is perfect for branding, printing, or decorating. You can write directly on them or attach an address label for shipping with a courier or through Australia Post. These flat boxes include a convenient self-locking tab to ensure contents are securely enclosed. They maintain their shape and won’t bend or roll. For added security, pair them with our corrugated paper roll.

4 products
  • 100pcs 350 x 250 x 16mm White Diecut SuperFlat Mailing Box
    100pcs 350 x 250 x 16mm Diecut SuperFlat Mailing Box
    - 5%
    NuPack
    100pcs 350 x 250 x 16mm Diecut SuperFlat Mailing Box
    From $68.95 AUD inc. GST
    From $68.95 AUD inc. GST $72.95 AUD
    - 5%
  • 100pcs 220 x 160 x 16mm A5, B22, C5 White Mailing Box Flat
    100pcs 220 x 160 x 16mm Mailing Box B22 C5 A5 White SuperFlat
    - 4%
    NuPack
    100pcs 220 x 160 x 16mm Mailing Box B22 C5 A5 White SuperFlat
    From $39.95 AUD inc. GST
    From $39.95 AUD inc. GST $41.95 AUD
    - 4%
  • 100pcs 310 x 220 x 16mm A4 B21 Super Flat White Box
    100pcs 310 x 220 x 16mm A4 B21 Super Flat White Box
    NuPack
    100pcs 310 x 220 x 16mm A4 B21 Super Flat White Box
    From $51.95 AUD inc. GST
    From $51.95 AUD inc. GST
  • 100Pcs 180 x 100 x 16mm White Flat Mailing Box Diecut
    100Pcs 180 x 100 x 20mm Flat Mailing Box SuperFlat Diecut
    NuPack
    100Pcs 180 x 100 x 20mm Flat Mailing Box SuperFlat Diecut
    From $32.95 AUD inc. GST
    From $32.95 AUD inc. GST

Secure Your Documents with Flat Pack Boxes

Flat pack boxes offer a superior alternative to paper envelopes. Available in multiple sizes, these boxes can be securely opened and resealed with a self-locking tab, preventing bending or crushing. The 310mm x 220mm size is perfect for A4 documents, keeping important papers like birth certificates, legal contracts, and photographs safe during transit.

Made entirely from recyclable cardboard, these flat boxes support sustainable practices. The customizable white surface allows businesses to add branding elements for a unique look. Interested in more versatile packaging?

Explore our full range of products, including Diecut Boxes, Heavy Duty Boxes, Cardboard Boxes, and Mailing Boxes, to find the perfect packaging solution for your needs.

Affordable and Reliable Flat Pack Boxes

Choosing NuPack Packaging ensures you receive the best value for flat boxes. If you find a lower price elsewhere, our Price Beat Guarantee has you covered (terms and conditions apply). We offer bulk discounts and ship directly from Hallam, Victoria, maintaining wholesale prices without compromising quality. Our flat boxes are robust, secure, and built to last.

We excel in customer service, providing instant online support and swift dispatch. Proudly 100% Australian-owned, we are committed to offering exceptional packaging solutions.

Order now or contact us for more information on our high-quality flat boxes.