Double wall cardboard boxes - 425 x 300 x 150mm A3

Boxes 425 x 300 x 150 mm A3 – ship flat and protected

Drawings, posters, art prints and picture frames have one thing in common: they need to stay flat. This box has a base of 425 x 300 mm, just large enough for the A3 format (297 x 420 mm), and an internal height of 150 mm. That way you can ship flat products without rolling or folding them. Since 2007, we have been the go-to wholesaler for double wall shipping boxes, supplying this size to studios, photographers, printers and webshops.

Thanks to the low height, a stack of A3 material can hardly shift. If you need more height, the A3 box of 430 x 310 x 250 mm offers extra room on a similar base.

Applications

Art and photography: framed work, mounts and A3 prints.
Printed matter: calendars, posters, construction drawings and presentation folders.
Flat products: board games, puzzles, laptops and tablets, with a little padding around them.

Specifications

Features and benefits

✔ A3 footprint – flat products lie straight and arrive undamaged.
✔ Low profile – little empty space, so less void fill.
✔ Sturdy double wall – protects against bending and knocks in transit.
✔ 18 packs per pallet – 270 boxes, delivered flat to save space.

Shipping fragile frames or glass? Apply warning labels to the box so the carrier handles it accordingly.

Ordered on working days before 3:30 PM? Then your order will be shipped the same day.

Do you have questions about which size of double wall shipping boxes is best suited to your situation? Please don't hesitate to contact us — by phone on +31 184 – 614256, via info@kortpack.nl or via WhatsApp.

Frequently asked questions

Does an A3 sheet fit flat in this box?

Yes. A3 measures 297 x 420 mm and the internal size is 300 x 425 mm. The clearance is deliberately tight so the contents cannot slide. For framed work with a wide frame, it is best to check the external size of the frame first.

Will this box fit through a letterbox?

No. The external size is around 439 x 314 x 164 mm, so this box travels as a parcel. In return, the 7 mm double wall offers far more protection than letterbox packaging.

How do I prevent flat products from being damaged?

Place a sheet of board or a foam panel below and above the product, pad the edges and seal every seam with packaging tape. The product then stays flat and knocks to the corners are absorbed.