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Long Boxes

PRODUCT DESCRIPTION

Designed for shipping and storing long, narrow products, these corrugated cartons provide a secure fit while helping reduce excess void space and packaging materials.

Ideal for pipes, tubing, posters, tools, sporting goods, and other elongated items
Long-side opening allows for easier packing and unpacking
Helps protect products during storage and transit
Available in a variety of lengths and dimensions
Durable corrugated construction for everyday shipping applications
Suitable for warehousing, fulfillment, and e-commerce operations

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Choosing a long box

A long box solves a problem a normal carton cannot: it holds something narrow without leaving a cavity around it. Ship a 40" curtain rod in a square box and you are paying to move air, and the rod slides the length of the carton every time it is handled. A box cut to the shape of the item stops both.

The trade-off is rigidity. A long carton flexes across its span, so the same board grade that is fine on a 12" cube can feel flimsy at 48". That is why the longer sizes are commonly specified in double wall — not because the contents are heavier, but because the box has further to bridge.

Typical lengths

24", 30", 36", 40", 48" and longer

Board grades

Single wall 32 ECT for light items; double wall 48 ECT for weight or long spans

Opening

Most long boxes open on the long side, so you load lengthwise instead of threading end-first

Carrier limit

Parcel carriers surcharge past 48"; over 96" usually moves to freight

Girth rule

Length + 2×(width + height). Parcel carriers cap combined size — long boxes hit this before they hit weight

SIZING TIP

Measure the longest rigid item you ship, add four inches, then pick the next size up. The four inches covers two inches of end padding at each end — where long parcels take nearly all their damage.

Frequently asked

What counts as a "long" box?

Anything where one dimension is much greater than the other two — usually 24" or more in length. The shape is the point: it keeps a narrow item from rattling around inside an oversized square carton.

Single wall or double wall for a long box?

Length works against you. A 48" single wall box will bow in the middle if the contents are heavy or if it gets stacked. For anything past about 36" with real weight in it, double wall holds its shape far better.

Will carriers take a 48" box?

Usually yes, but often with an additional handling charge. Past roughly 96" you are into freight rather than parcel. If you ship long items regularly it is worth checking your carrier agreement before you standardise on a size.

What do people ship in these?

Posters and prints, tubing and conduit, window blinds, curtain rods, trim and moulding, fishing rods, tripods and light stands, banners, and rolled signage or artwork.

How much space should I leave?

Two inches of padding at each end is the rule of thumb. The ends take the impact when a long box is set down, so end padding matters more than side padding.

Not sure which length you need?

Tell us what you are shipping and we will help you spec it. Free delivery on Houston orders over $500, or collect it yourself at Harwin Dr.

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