40 x 40 x 40 gaylord box

Plants with a 40 x 40 pallet or a tight bay. Because it is smaller than the pallet, there is no overhang, which preserves stacking strength.

How it sits on a pallet

It sits inside the 48 x 40 deck with 8 in to spare lengthways and 0 in across, so nothing overhangs. The box covers 11.11 sq ft of floor and the deck covers 13.33.

What the rating means

The 1,300 lb figure is one maker's listed capacity for a new box. Spread across 37 cu ft, that is 35.1 lb for each cubic foot. A load denser than that reaches the rating before the box is full; a lighter load fills the box first. A used box is rated by grade and place, not by the new figure.

What to watch

Smaller footprint means a lower rated capacity; check the maker's mark.

Handling

A 40 x 40 footprint sits inside a standard pallet with 8 in to spare lengthways, so nothing overhangs and nothing is lost to it. It also fits tight bays and narrow aisles that a 48 in box would not clear. For plants with older racking, that margin is the reason to choose it.

What fills it

It suits mid-weight, mid-volume flows: parts, packaging, scrap and returns that do not justify a full 48 x 40 box. The smaller footprint means a lower rated capacity, so check the maker's mark before you plan a heavy load.

Three loads, worked through

At 20 lb a cubic foot the full box is 740 lb of load. Stack Check gives "two high" for Grade A in a warm bay and "do not stack" for Grade B on a cold dock; the bottom box is allowed 995 lb and 539 lb respectively. Fill the 40 x 40 x 40 to the brim with something that weighs 35 lb a cubic foot and it holds 1,295 lb, 1,325 lb with the box. As Grade A in a heated bay for 30 days that comes out as "do not use at this load", with 995 lb allowed on the bottom box; as Grade B on a dock it comes out as "do not use at this load", with 539 lb allowed. Suppose the material is 50 lb a cubic foot. A brim-full box then weighs 1,880 lb counting the box. Heated bay, Grade A, a month: "do not use at this load" (995 lb allowed below). Dock, Grade B, a month: "do not use at this load" (539 lb allowed).

How a used one stands

Below, 3‑wall boxes rated at 1,300 lb filled to the brim with material at 15, 25 and 35 lb a cubic foot, so the loads are 560 lb, 930 lb, 1,300 lb. Each is 30 days under load unless the column says 90 days.

What the bottom box is allowed to carry

Read this table as a budget. The bottom 40 x 40 x 40 box has the allowance shown, set by its grade and by where and how long it stands (up to 90 days). Each loaded box above spends part of it; a 960 lb box spends 960 lb.

Ordering this size

1. Say 40 x 40 x 40 in and the wall count; the same footprint is sold in more than one height.
2. Give the maker's mark if the box has one. The 1,300 lb figure is one maker's new-box listing, not a promise about a used one.
3. Name the pallet. A 40 x 40 footprint sits inside a 48 x 40 deck, but the pallet still sets how the load is strapped.
4. Weigh one full box. Past 650 lb, the stack height drops quickly.
5. Say where the stack will stand and for how long: the dock or the heated bay changes the answer more than the grade does.

In a trailer

A buyer pricing freight will ask how many of these fit. For a 630 x 98 x 108 in trailer interior, a 40 x 40 in box gives 30 floor positions at best. Whether a second tier is allowed depends on the roof and on Stack Check.

In the cold

A cube is stable, and sitting inside the deck means no overhang cut. In the cold its rating is the limit, not its shape. Check the maker's mark and plan from that.

New or used at this size

A smaller box does not mean an easier one: used 40 x 40 x 40 boxes are less common than the standard size and the grade spread is wider. Ask for the grade by description, not by letter alone.

Who orders it

Plants with tight bays, older racking or 40 x 40 pallets; light assembly and subassembly flows; and shops that want an even cube for loading by hopper.

Against its neighbours

Compared with the 48 x 40 x 36, it holds less and sits inside the deck; compared with the 36 x 36 x 36, it holds more. It is the middle of the small sizes, and the one that fits a 40 x 40 pallet exactly.

Because the cube sits inside the deck it leaves a margin for strapping, wrap and forklift tines. That margin is easy to forget until a crew tries to wrap a standard box on a tight deck. On older racking, where a 48 in box overhangs the beam, a 40 in cube is sometimes the only gaylord that fits at all, and that alone settles the choice.

Back to the size hub, or see the full and partial bottoms, the wall counts and how to compare sizes by load.

Questions, answered