Guide · June 22, 2026
A "straight truck" and a "box truck" are the same vehicle by two names. Here's how the common sizes stack up — and which one actually fits your load.
If you've ever booked a delivery and been asked "what size box truck do you need?", the honest answer is: it depends on how much freight you have and whether the dock can take a bigger vehicle. Below is the practical breakdown we use when we spec a truck for a customer, without the guesswork.
A straight truck is a truck where the cab and the cargo box sit on one rigid frame — unlike a tractor-trailer, where the trailer detaches from the cab. Because the whole thing is one piece, drivers don't need to drop or hook a trailer, and many smaller straight trucks can be driven without a CDL (the cargo box on a frame is why people also call it a "box truck" or "cube truck"). For local and final-mile delivery, the straight truck is the workhorse.
Box trucks are sold by the length of the cargo box. These are the four sizes you'll see most often, with typical interior dimensions and capacity. Treat them as ballpark — exact numbers vary by make and model.
| Box length | Typical interior (L×W×H) | Pallets | Approx. payload |
|---|---|---|---|
| 16 ft | 16' × 7'6" × 7' | ~6 standard | ~4,000–6,000 lb |
| 20 ft | 20' × 7'8" × 7'4" | ~8 standard | ~6,000–8,000 lb |
| 24 ft | 24' × 8'2" × 8'2" | ~10 standard | ~8,000–10,000 lb |
| 26 ft | 26' × 8'5" × 8'5" | ~12 standard | ~10,000 lb |
The 26 ft box truck is the most common in commercial freight because it's the largest you can generally run without a CDL (under the 26,001 lb GVWR line) while still holding a full dozen pallets. That makes it the default for store deliveries, FF&E, and last-mile out of a warehouse.
"How many pallets" is the question that actually decides the size. A standard 48"×40" pallet, loaded floor-only (not stacked), fills the box roughly two-abreast down the length. So a 26-footer takes about 12, a 24-footer about 10, and so on. If your freight stacks, you fit more by cube but you're still limited by payload weight — which is why heavy, dense product (tile, fasteners, canned goods) hits the weight ceiling long before it runs out of floor.
Two details matter as much as size. First, a lift gate — the hydraulic platform at the rear — is essential if the delivery point has no dock and the freight is too heavy to hand-down. Second, dock height: a 26 ft truck is tall, and some urban or residential stops can't physically receive it, in which case a 16 or 20 ft truck is the right call even for a small load. We spec for the destination, not just the freight.
For importers, the box truck is usually the last leg. A container comes off the terminal on a chassis (that's drayage), the freight is unloaded and re-handled at a transload dock, and then it goes out to its final destinations on straight trucks sized to each stop. Because we run drayage, the warehouse and the box-truck fleet under one roof, an importer like our customer PartStop gets the whole chain — port to pallet to doorstep — on one invoice instead of three vendors pointing at each other.
Yes. "Straight truck," "box truck" and "cube truck" all describe a truck with the cab and cargo box on one rigid frame. "Straight" refers to the single frame (vs. an articulated tractor-trailer); "box" refers to the enclosed cargo body.
About 12 standard 48"×40" pallets loaded floor-only, or more if the freight can be safely stacked — subject to the truck's payload weight limit of roughly 10,000 lb.
Typically about 26 ft long, 8'5" wide and 8'5" high inside, though exact figures vary by manufacturer. That's the largest box truck most operators can run without a CDL.
Generally no, as long as the truck's gross vehicle weight rating stays under 26,001 lb — which covers most 16–26 ft box trucks. Heavier configurations or hazmat loads can change that.
Match the size to both your freight volume and the delivery point. A 26-footer maximizes capacity, but if the destination is residential or space-tight, a 16 or 20 ft truck with a lift gate is often the better fit.