A Stackable Container costs twelve times a carton, so how does it pay?

Answer: Turnover: at 260 turns a year, 0.06 against 6.50.

The carton has better volume efficiency, so why change?

Answer: Per square metre, five tiers carry 1.8 times what three cartons do.

A steel bin takes 400 kg, so why not use it everywhere?

Answer: At 26 kg it cannot fold, so the return leg bills as freight.

The sleeve box returns tighter, so what is the catch?

Answer: Hinge life near 800 cycles, and side walls that lean under load.

How do I choose for a specific route?

Answer: Turns, loop, racking. Two failures out of three rule it out.

Stackable Container Comparison: How It Differs from Alternatives

Quick answer: A Stackable Container wins on volume per unit of floor, stack height earned by geometry rather than tape, load-to-weight ratio, and a body that folds for the return leg. It loses on purchase price, which only turnover can dilute.

Where a Stackable Container Parts Ways with Four Alternatives
Volumetric Efficiency per Unit
Stack Height and the Load-to-Weight Ratio
Return Volume and Service Life
Five-Year Cost and the Trade-off
FAQ

1. Where a Stackable Container Parts Ways with Four Alternatives

The alternatives answer different questions: a carton buys one-way protection, a steel bin impact resistance, a moulded box price, a sleeve box an empty return. A Stackable Container buys cycles, so it balances only in a closed loop.

Four measures decide: volume efficiency, stack height, load-to-weight ratio, return volume. They trade against each other: a thicker wall buys height and costs weight.

Option	Internal, L	Outer, L	Efficiency	Static stack
Stackable Container	68	81.6	83%	5 high
Corrugated carton	62	72.7	85%	3 high
Steel bin	60	78.0	77%	4 high
Moulded storage box	55	68.0	81%	2 high
Sleeve pallet box	70	84.0	83%	4 high

On efficiency the carton wins at 85 per cent, because a 7 mm double wall loses little inside. That is an empty-box figure; load it, wet it, and the arithmetic changes.

2. Volumetric Efficiency per Unit

Efficiency is internal litres over outer volume: 83 per cent here on a 3.2 mm wall with a 4 mm floor rib, second behind the carton at 85, ahead of the steel bin at 77.

Stackable Container: close-up of a yellow case corner, four short ribs on the lid above the joint line, two side latches clamped, folded handle beside

The measure that separates them is litres per square metre. Five high at 340 mm makes a 1.75 m column and 340 L on a 600 × 400 mm footprint; three cartons at 330 mm give 186 L, a factor of 1.8. Rent is charged on area, and steps close the plan area cartons lose to bulge.

3. Stack Height and the Load-to-Weight Ratio

Height is capped by the base lid: 140 kg at five high with 2.5 mm of deflection, and 4.2 mm at six high, where it yields.

Option	Weight, kg	Load, kg	Load to weight	Base load, kg
Stackable Container	4.6	35	7.6	140
Corrugated carton	1.1	20	18.2	not applicable
Steel bin	26	400	15.4	400
Moulded storage box	2.4	12	5.0	not applicable
Sleeve pallet box	12	250	20.8	250

That column flatters the carton at 18.2, yet its mass never meets a tier, while the case spends weight on cones that carry the column. Tare compounds: six units 27.6 kg, six steel bins 156 kg.

4. Return Volume and Service Life

Empty units do not bill as cargo, so the return leg costs more. Folded to 108 mm, the case returns at 32 per cent of its open volume; a sleeve box reaches 22; a steel bin cannot fold and returns at 100.

Stackable Container: yellow cases stacked five high on a timber pallet, three columns wide, blue racking and an open warehouse door behind

Life runs in cycles, not years: 1500 rated with steps rounding off near 1200, sleeve hinges failing near 800, moulded boxes at 500, steel bins at 2000 with an annual repaint. Cycles returned per cubic metre justifies the higher price: 1.3 times the sleeve box, 3.1 times the steel bin.

5. Five-Year Cost and the Trade-off

At 78 against 6.5 the case costs twelve times a carton, but the carton is spent once and the case runs 1500 turns, so amortisation falls to 0.06 against 6.50.

Option	Price	Turns a year	Years	Cost per turn
Stackable Container	78	260	5	0.06
Corrugated carton	6.5	1	single trip	6.50
Steel bin	420	260	8	0.20
Moulded storage box	32	260	2	0.06
Sleeve pallet box	260	200	4	0.33

Choose by route: one-way despatch takes a carton, impact loads a steel bin, many variants a sleeve box, and a closed loop above 100 turns on racking takes the stackable unit. Below 50 turns the price swallows the gain.

Conclusion

None of the five is better in the abstract, only against a route: the carton wins one-way protection, the steel bin wins load, the moulded box wins price, the sleeve box wins return volume, and the Stackable Container wins by spreading four bills over a thousand turns.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.