When You Don’t Need a Reefer: Side Curtain Alternatives for Sensitive Cargo

Reefers are expensive. Refrigerated trailers cost more per trip than dry trailers, run on additional fuel for the chiller unit, and tie up specialised capacity. Many shippers default to a reefer when their cargo is “sensitive” — but a meaningful share of those shipments would actually do fine in a 40ft side curtain trailer with the right handling.

When a Reefer Is Genuinely Needed

• Frozen goods (ice cream, frozen meat, frozen seafood) — always reefer.
• Chilled fresh produce, dairy, fresh meat, fresh seafood — reefer.
• Pharmaceuticals with strict temperature ranges — reefer (often validated cold chain).
• Vaccines and biologics — reefer with temperature monitoring.
• Some chocolate and confectionery in hot weather — reefer.

When a Side Curtain Trailer Is Often Fine

• Ambient-stable food products — dry goods, packaged snacks, beverages outside their freeze sensitivity, shelf-stable groceries.
• Cosmetics and personal care — most shelf-stable formulations don’t need active cooling, just protection from sun and rain.
• Electronics — while sensitive to humidity over long sea voyages, short cross-border road trips in covered trailers are fine.
• Pharmaceutical packaging materials — protected from rain and dust, no temperature requirement.
• Building materials — cement, tiles, packaged construction goods.

What “Sensitive but Not Reefer” Looks Like in Practice

A side curtain trailer offers an enclosed cargo space, weather protection, and clean loading. For sensitive non-temperature cargo, additional steps can include:

• Confirming trailer cleanliness from the prior load.
• Avoiding mixed loads with strong-smelling or contaminating cargo.
• Loading the cargo dry and properly covered/wrapped.
• Ensuring quick door closure during rain at loading or unloading.

Cost Implications

Switching from reefer to side curtain where appropriate typically reduces per-shipment cost meaningfully on the SG–MY lane — worth checking with your trucker if you’ve been defaulting to reefer.

Not sure whether your cargo needs a reefer? Send us the details and we’ll give you a straight answer.