A numbers-first, field-tested method to plan 40ft high-cube reefer loads with 60×40 cm crates. Exact tie-highs, pallet counts, airflow gaps, and safe weight distribution—plus when to palletize vs floor-load for Indonesian vegetables.
We went from preventable claims on mixed-veg reefers to a 0.6% damage rate while adding 8–14% capacity simply by standardizing our 60×40 crate load plans. This guide is the exact, numbers-first playbook we use for Indonesian vegetables going to Asia, the Middle East, and beyond.
The 3 pillars of a reliable 40ft reefer load plan
- Airflow integrity. Don’t block supply-air under the T-floor or the top return. Leave defined gaps and avoid films that “skirt” the pallet base.
- Geometry math. Decide palletization pattern and tie-high with real dimensions, not guesses. Small tweaks add hundreds of crates per box.
- Weight, strength, and segregation. Keep heavier SKUs forward, protect leafy greens from compression, and separate ethylene producers from sensitive items.
Week 1–2: Map your SKUs, crates, and container constraints
Here’s the thing. Most issues start before packing. We lock down four numbers first: crate footprint, crate height, pallet base, and safe pallet height.
- Container reference: 40ft HC reefer typical internal L×W×H ≈ 11,580 × 2,280 × 2,550 mm. Keep top clearance 120–150 mm and side gaps 50–75 mm each side.
- Pallet base you’ll actually see in Indonesia: 1,100 × 1,100 mm (JIS). Pallet height 120–150 mm.
- 60×40 cm export crates: common heights 150–200 mm. Measure yours.
How many 60×40 vegetable crates fit on an 1,100×1,100 pallet?
- Per layer: 4 crates. A 1,100 mm side cannot take two 600 mm lengths. The most efficient no-overhang pattern is 4 per layer.
- Tie-high calculator: tie-high = floor((Max stack height − pallet height) ÷ crate height).
- Safe max pallet height in 40ft HC reefer: up to ≈ 2,300 mm product + pallet, but we cap for commodity fragility and top clearance. Practical ranges below.
Examples from our runs:
- Leafy crates 180 mm high (e.g., Baby Romaine, Loloroso): 10–12 layers. That’s 40–48 crates per pallet.
- Firm veg crates 180–200 mm (e.g., Onion, Beetroot, Carrots): 11–13 layers. That’s 44–52 crates per pallet.
Container pallet count with 1,100×1,100: 20 pallets is the dependable maximum in a 40ft HC reefer with proper gaps. So your total 60×40 crate count when palletized typically lands at 800–1,040 crates per container depending on tie-high.
Pro tip that’s not obvious: If your commercial team insists on 1,100×1,100 but needs more throughput, use slip-sheets on the last two rows instead of pallets. You can often keep airflow right, maintain 20 “pallet positions,” and squeeze 2–4% more cases. Only do this with a carrier that accepts slip-sheets and when consignee has a push-pull attachment.
1200×1000 vs 1100×1100 pallet for 60×40 crates
- 60×40 crates tile better on 1,200×1,000 pallets (5 per layer). But a 40ft HC reefer often fits fewer of these pallets overall compared with 1,100×1,100. Net-net, total crate count is usually similar. We favor 1,100×1,100 in reefers for handling and count predictability.
Week 3–6: Build sample stacks, dial tie-high, validate airflow
We prototype one full pallet per commodity. Compression is what kills quality, not the ship itself.
What’s the best tie-high for 60×40 crates to avoid crushing leafy greens?
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Leafies like Baby Romaine or Loloroso: 10–11 layers for 180 mm crates. Insert a light corrugated pad every 3–4 layers. That pad trick consistently drops pressure bruising by 10–15% in our QC.
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Sensitive but firmer items like Japanese Cucumber (Kyuri) and Purple Eggplant: 11–12 layers if crate walls are stout and lids interlock. Test by stacking for 24 hours at shipping temp, then check bottom-layer deformation.
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Dense items (Onion, Beetroot): 12–13 layers in strong crates. Strap vertically and corner-board.
How much airflow space should we leave around pallets?
Our rule set, validated with several ocean carriers’ 2025–2026 guidelines:
- Top: 120–150 mm free to the ceiling.
- Sides: 50–75 mm per side.
- Bulkhead (front) and doors: 100–150 mm.
- Never “skirt” the pallet with stretch wrap. Keep at least 50 mm up from deck so supply air can move through T-floor channels.
Ethylene segregation that actually works
- Producers: Tomatoes are strong. Red Cayenne Pepper moderate. Many roots minimal.
- Sensitive: Japanese Cucumber (Kyuri), lettuce types, Purple Eggplant.
- Practical setup in one reefer: place producers together in the rear half, sensitives in the front half near the evaporator. Set fresh-air vent 15–25 m³/h when mixing to purge ethylene and CO₂. Add sachet scrubbers on sensitive pallets. If total cargo respiration is low, close vent in hot lanes to protect temperature and only crack open during cooler night hours at origin loading. We adjust vent logs trip-by-trip.
Week 7–12: Scale, choose palletized vs floor-loaded, and lock your SOP
Is it better to floor-load or palletize 60×40 crates for a 40ft reefer?
- Palletized with 1,100×1,100: predictable handling, faster cross-dock, 20 pallets per box, about 800–1,040 crates total.
- Floor-loaded: more capacity but slower unload. Our steady-state count for 60×40 crates is about 1,080 crates per container at 12 layers.
How we get to that 1,080 number floor-loaded:
- Across width: 5 crates of 400 mm side across width = 2,000 mm, leaving side gaps ≈ 140 mm total. Good airflow.
- Along length: 18 rows at 600 mm depth = 10,800 mm. Leave ≈ 700–800 mm combined at front and door for airflow and sway. That’s 5 × 18 = 90 crates per “floor layer.”
- Vertical: typically 12 layers high for 180–200 mm crates to maintain ≥120 mm top gap. 90 × 12 = 1,080 crates.
When we switch to floor-load:
- Leafy-only or cucumber-only loads where uniform crate strength allows neat columns.
- Ports where labor cost and time-in-yard are manageable. In some EU and GCC ports, de-vanning time kills the benefit. Run the numbers.
What is the safe maximum pallet height for vegetables in a 40ft high-cube reefer?
- We keep pallet total height (pallet + product) between 2,200 and 2,300 mm. That leaves 120–150 mm top clearance and reduces top-layer chill spots.
- For ultra-fragile leafies in shoulder seasons, we cap at ≈ 2,160–2,200 mm and accept a small count loss for quality.
How many 60×40 crates fit in a 40ft HC reefer overall?
- Palletized on 1,100×1,100: typically 20 pallets × 40–52 crates per pallet = 800–1,040 crates.
- Floor-loaded: around 1,080 crates at 12 layers. Up to 1,170 if your crate height is 150 mm and your top gap still ≥120 mm, but confirm compression risk first.
Container weight limit and simple axle-safe distribution
- Typical 40ft HC reefer payload: 27–29 MT. To stay road-legal across most lanes, we plan 24–26 MT cargo weight.
- Simple method we use:
- Weigh one full pallet (or a 10-crate stack if floor-loading) for each SKU.
- Build the nose first with the three heaviest pallets or rows. Aim for 52–55% of total cargo weight in the front half.
- Keep the last two rows the lightest. Avoid more than 3 MT difference between container halves.
- Mixed-veg? Interleave heavy rows 1–2 and 6–7, medium rows mid-box, light at the door. Strap the last two.
Common mistakes that quietly kill reefer loads
- Overwrapping to the deck. It blocks T-floor air and creates hot pallets mid-journey.
- Topping out the ceiling. Anything less than 100–120 mm top gap raises return-air temp and humidity spikes.
- Ignoring crate wall strength. A “12-high” spec on paper can still crush leafy greens without interlayer pads.
- Mixing tomatoes with cucumbers without venting. We’ve seen yellowing and pitting jump in 5–7 days.
- Treating 1,100×1,100 like a universal base for 60×40. It isn’t. Expect 4 per layer, and plan counts accordingly.
A few commodity examples from our program
- Japanese Cucumber (Kyuri): 11–12 layers in strong, ventilated 60×40 crates. Keep 8–10°C, light venting if mixed with ethylene producers.
- Leafies like Baby Romaine and Loloroso: 10–11 layers, pads every 3–4 layers, 0–4°C with dry liners. No mixing with tomatoes.
- Tomatoes: 10–12 layers depending on crate and variety. Grouped together in rear half. Vent set to purge CO₂/ethylene on longer voyages.
- Roots (Beetroot, Carrots): 12–13 layers, tight wrap but off the deck, 0–4°C. Easy mixers with neutral crops.
What’s interesting is that small planning moves ripple into real savings: on Jakarta exports we routinely secure an extra 80–120 crates per box by choosing floor-load for cucumber-only programs, or by switching leafy pallets from 12 to 11 layers with pads and cutting claims to near zero.
Resources and next steps
If you want a fast sanity check on your Jakarta or Surabaya sailing next week, share your crate height, target temp, and route. We’ll run a quick tie-high and box-count for you, and flag any ethylene conflicts. Need help with your specific situation? Contact us on whatsapp. If you’re still building your program and want to see compatible SKUs, you can also View our products.
Key takeaways you can use today:
- 1,100×1,100 pallets fit 20 per 40ft HC reefer. With 60×40 crates that’s 4 per layer, 10–13 layers depending on commodity.
- Floor-loading 60×40 crates typically nets ~1,080 crates at 12 layers, but plan extra time to unload.
- Protect airflow. Top gap 120–150 mm, sides 50–75 mm, front/door 100–150 mm.
- Segregate ethylene producers and set vent 15–25 m³/h when mixing with sensitives. Add pads in leafy stacks.
In our experience, doing this math once and turning it into a simple SOP pays back for every departure after that.
