Half an inch of overhang costs you three trips.
Pallet fit sounds like a detail and is actually the dominant factor in how long your containers survive. A box proud of the deck edge takes a hit on every rack move, every time, forever.
Check a fit
Give us your pallet dimensions and box size and we will work out the pattern.
Work out your own
Box Studio computes the best of both orientations on a 48 × 40 deck and shows the layer count.
Six fits we are asked about constantly.
| Pallet | Box | Per layer | Layers | Note |
|---|---|---|---|---|
| 48" × 40" GMA | 48" × 40" × 36" gaylord | 1 | 1 | Flush footprint. 20 – 24 per 53' trailer, knocked down: 400+. |
| 48" × 40" GMA | 24" × 20" × 18" | 4 | 2 | Interlock alternating layers for stability. |
| 48" × 40" GMA | 24" × 16" × 16" | 5 | 3 | Two long plus three short; leaves a small void. |
| 48" × 40" GMA | 20" × 20" × 20" | 4 | 3 | Column stack; 8" overhang-free margin on the long axis. |
| 48" × 40" GMA | 18" × 18" × 18" | 5 | 3 | Pinwheel with a centre void. 15 per pallet. |
| 48" × 40" GMA | 16" × 16" × 16" | 6 | 3 | Flush footprint, no overhang; stretch-wrap recommended. |
| 48" × 40" GMA | 14" × 14" × 14" | 9 | 4 | Three by three, slight void each side. |
| 48" × 40" GMA | 12" × 12" × 12" | 13 | 4 | Pinwheel pattern; 52 boxes per pallet. |
| 48" × 40" GMA | 12" × 9" × 6" | 17 | 8 | Brick pattern; count carefully, this one is easy to get wrong. |
| 48" × 48" drum | 41" × 41" × 45" octabin | 1 | 1 | Single bin per pallet; strap to deck. |
| 48" × 48" drum | 24" × 24" × 24" | 4 | 2 | Perfect flush fit, column stacked. |
| 42" × 42" | 20" × 20" × 20" | 4 | 2 | Common beverage footprint. |
| 48" × 45" produce | 48" × 45" × 34" | 1 | 1 | Field-pack bin, vented, flush. |
| 44" × 44" | 22" × 22" × 20" | 4 | 3 | Flush; popular in chemical distribution. |
| 36" × 36" half | 18" × 18" × 18" | 4 | 3 | Half-pallet display base. |
| 1200 × 1000 mm | 600 × 400 × 400 mm | 5 | 3 | Metric euro-equivalent; the closest to a GMA pattern. |
Three patterns, three trade-offs.
Column stacking is strongest. Interlocking is most stable. Choosing wrongly loses either strength or stability, and you will discover which one at the worst possible moment.
| Pattern | Strength | Stability | Use when |
|---|---|---|---|
| Column (aligned) | Highest — up to 100% of ECT retained | Low; needs stretch wrap or banding | Heavy, uniform loads going into racking |
| Brick (offset rows) | Moderate — ~60% of ECT retained | Good | Mixed weight, manual handling, no racking |
| Pinwheel | Moderate | Highest | Odd footprints that leave a centre void; tall stacks |
| Interlocked layers | Lowest — ~45% of ECT retained | Highest | Light loads where toppling is the real risk |
The percentages are the proportion of a box's rated edge crush strength you actually keep. Offsetting a box so its corners no longer sit on the corners below throws away most of the structure you paid for — which is why column stacking plus wrap usually beats interlocking plus hope.
The tolerance nobody writes into a spec.
And underhang is not free either — a container smaller than the deck leaves the pallet edge exposed to forklift contact, which damages the pallet instead of the box.
Eight decks, and what sits on them.
Specify your container to the pallets you actually own, not to the standard. A 48 × 40 GMA pallet in the real world runs anywhere from 47.5 to 48.5 inches.
| Footprint | Construction | Typical use | Note |
|---|---|---|---|
| 48" × 40" GMA, 4-way | Stringer, notched | North American standard | Real examples run 47.5 – 48.5 inches. Measure yours. |
| 48" × 40" block | Block, 4-way true | Automated handling | Better for AS/RS and robotics |
| 48" × 48" drum | Stringer | Chemical, octabins | Suits the 41-inch octabin footprint |
| 42" × 42" | Stringer | Beverage, telecom | Common in soft-drink distribution |
| 48" × 45" | Stringer | Produce field pack | Matches vented produce bins |
| 36" × 36" half | Block | Retail display | Store-level display base |
| 1200 × 1000 mm | Block | International | The closest metric equivalent to GMA |
| 1200 × 800 mm EUR | Block | Europe | Too narrow for most US bulk containers |
| Pattern | Compression retained | Stability | Wrap needed | Use when |
|---|---|---|---|---|
| Column (aligned) | Up to 100% | Low | Required | Heavy uniform loads into racking |
| Brick (offset rows) | ~60% | Good | Recommended | Mixed weight, manual handling |
| Pinwheel | ~60 – 70% | Highest | Recommended | Odd footprints with a centre void |
| Full interlock | ~45% | Highest | Optional | Light loads where toppling is the risk |
What actually fits in the truck.
Every cube figure we quote is calculated against these, at a realistic 72% packing efficiency rather than a theoretical 100%.
| Unit | Inside dimensions | Volume | Pallet positions | Payload | Note |
|---|---|---|---|---|---|
| 53' dry van | 630" × 100" × 110" | 3,489 ft³ | 26 | 45,000 lb | Our standard outbound unit |
| 48' dry van | 576" × 99" × 108" | 3,100 ft³ | 24 | 44,000 lb | Older fleet, still common on LTL |
| 28' pup | 330" × 100" × 108" | 1,750 ft³ | 12 | 22,000 lb | LTL linehaul segment |
| 26' straight truck | 306" × 96" × 96" | 1,700 ft³ | 12 | 10,000 lb | Liftgate deliveries to sites without docks |
| 40' container | 474" × 92" × 94" | 2,390 ft³ | 20 | 59,000 lb | Export; corrugated avoids ISPM 15 |
| 40' high cube | 474" × 92" × 106" | 2,694 ft³ | 20 | 58,000 lb | Preferred for low-density freight |
Ten conversions we use every day.
None of these are difficult. All of them are regularly got wrong, usually by a factor of 1,728.
| From | To | Factor | Worked example |
|---|---|---|---|
| Cubic inches | Cubic feet | ÷ 1,728 | 48 × 40 × 36 = 69,120 in³ = 40.0 ft³ |
| Square inches | Square feet | ÷ 144 | 13,528 in² = 93.9 ft² |
| Pounds per ft² | Board weight | × area in ft² | 93.9 ft² × 0.55 = 51.7 lb |
| Pounds | Kilograms | × 0.45359 | 51.7 lb = 23.5 kg |
| Inches | Millimetres | × 25.4 | 48" = 1,219 mm |
| Cubic feet | Cubic metres | × 0.02832 | 40.0 ft³ = 1.13 m³ |
| Short tons | Metric tonnes | × 0.90718 | 11,800 tons = 10,705 tonnes |
| Loose OCC volume | Weight | × 80 lb/yd³ | 40 yd³ ≈ 3,200 lb |
| Baled OCC volume | Weight | × 700 lb/yd³ | 2 yd³ bale ≈ 1,400 lb |
| Trailer volume (53') | Usable | × 0.72 | 3,489 ft³ → 2,512 ft³ |
Eight failure modes, coded from our own retirements.
Ordered by share of retired containers. Note how few are repairable, and how many are prevented by something that costs almost nothing.
| Failure mode | Share | Repairable? | What prevents it |
|---|---|---|---|
| Forklift tine strike, lower long panel | 31% | Rarely | Floor approach guides, full-deck pallets, slower pick-face speed |
| Moisture through the flutes | 26% | No | Pallets not concrete, covered storage, let cold trailers equalise |
| Top-edge crush | 18% | Sometimes | Telescoping lids on anything stacked or racked |
| Strapping cut at the corner | 9% | Sometimes | Corner boards — the cheapest fix on this list |
| Corner rounding from over-stuffing | 7% | No | Do not fill above the top score line; buy the taller box |
| Cracked score lines | 5% | Yes, re-score | Separate lids instead of repeatedly folded flaps |
| Manufacturer's joint failure | 3% | Yes | Prefer stapled joints over glued for reuse |
| Delamination | 1% | No | Moisture control; there is no other cause worth chasing |
What the rack does to the box.
Container specification and racking choice are the same decision made twice. Drive-in and push-back racking are where we see the most container damage, because the container is handled blind.
| Rack type | Beam span | Load capacity | Effect on containers |
|---|---|---|---|
| Selective pallet rack | 96 – 144" | 2,500 – 6,000 lb/level | Most common; one pallet deep |
| Double deep | 96 – 108" | 2,500 – 5,000 lb/level | Needs a reach truck; container squareness critical |
| Drive-in | N/A, rails | 2,000 – 4,000 lb/pallet | Container damage risk is highest here |
| Push-back | 96 – 120" | 2,200 – 4,500 lb/pallet | Dynamic load; overhang is unforgiving |
| Pallet flow | 96 – 120" | 2,000 – 3,000 lb/pallet | Bottom-board condition decides whether it rolls |
| Floor stacking | N/A | Board-limited | Where box compression strength actually binds |
| Item | Limit | Note |
|---|---|---|
| Single-person lift, ideal zone | Up to 35 lb | Between knuckle and shoulder height, close to the body |
| Single-person lift, absolute | 50 lb | Common carrier and insurer threshold for cartons |
| Two-person lift | Up to 100 lb | Requires clear path and matched heights |
| Carton max gross, 32 ECT | 65 lb | Certificate limit, not a handling recommendation |
| Carton max gross, 48 ECT | 120 lb | Mechanical handling expected |
| Gaylord, loaded | 1,800 – 2,400 lb | Forklift or pallet truck only |
| Pallet jack, manual | 5,500 lb | Flat floors only |
| Counterbalance forklift, typical | 5,000 lb at 24" load centre | Derates sharply as load centre moves out |
Why empty packaging rates so badly.
LTL pricing keys off density. Knocked-down corrugated weighs almost nothing and occupies a full pallet position, so it lands near the expensive end of a scale designed around weight.
| Class | Density | Typical commodity | Where packaging sits |
|---|---|---|---|
| 50 | 50+ lb/ft³ | Bricks, steel bar | Rarely packaging |
| 55 | 35 – 50 | Hardwood flooring | Dense palletised goods |
| 60 | 30 – 35 | Car accessories | Heavy cartoned goods |
| 65 | 22.5 – 30 | Bottled beverages | Full case packs |
| 70 | 15 – 22.5 | Food in cartons | Typical dense distribution |
| 85 | 12 – 15 | Crated machinery | Palletised assemblies |
| 92.5 | 10.5 – 12 | Computers, monitors | Cushioned electronics |
| 100 | 9 – 10.5 | Boat covers, canvas | Light bulky goods |
| 125 | 7 – 8 | Small appliances | Void-filled cartons |
| 150 | 6 – 7 | Auto sheet metal | Erected boxes start here |
| 175 | 5 – 6 | Clothing, couches | Knocked-down heavy board |
| 200 | 4 – 5 | Aircraft parts | Knocked-down double wall |
| 250 | 3 – 4 | Mattresses, plasma TVs | Knocked-down single wall |
| 300 | 2 – 3 | Wood cabinets, tables | Erected gaylords |
| 400 | 1 – 2 | Deer antlers | Erected light bulk |
| 500 | < 1 | Gold dust, ping-pong balls | Loose void fill |
Note the two rows that matter here: knocked-down board is class 150 – 250, erected containers are class 300 – 400. That gap is the entire argument for banding everything flat.
Seven things about your dock that change the quote.
Declared before the quote these are free to plan around. Discovered on delivery day they are the single most common reason a cheap quote becomes an expensive invoice.
| Item | Specification | Why it matters |
|---|---|---|
| Dock height | 48 – 52" typical | Below 44" a standard trailer needs a leveller or a ramp |
| Dock leveller capacity | 20,000 – 30,000 lb | Loaded gaylords on a pallet truck approach the limit |
| Door width | 8 – 9 ft | Double-stacked knocked-down bundles are wide |
| Apron depth | 100 – 130 ft | A 53-foot trailer needs room to square up |
| Liftgate requirement | If no dock | Add $75 – $150; declare it before the quote, not after |
| Receiving window | 3-day window ideal | Lets us consolidate; worth more than a volume discount |
| Forklift availability | 3,000 lb minimum | A loaded gaylord plus pallet exceeds many electric walkies |