Choosing the wrong trailer type is one of the most avoidable -and most costly -mistakes in full truckload shipping. A shipper books a dry van for a load that needed temperature control. A manufacturer sends oversized equipment in an enclosed trailer it cannot fit into. A retailer gets charged for a specialty reefer unit on freight that could have moved standard.
These are not rare situations. They happen every week, and the consequences range from rejected loads and rescheduled pickups to spoiled goods and damaged freight.
Understanding FTL trailer types in the USA is not a technical exercise -it is a practical business decision that affects your costs, your delivery timelines, and your customer relationships.
In this guide, we break down dry van, reefer, and flatbed options so you can match the right equipment to your freight with confidence. With insights from S&S Brokerage Inc., we will also walk through real scenarios where the wrong equipment choice cost shippers real money -and how to avoid making the same call.
Why Trailer Selection Matters More Than Most Shippers Realize
When most businesses think about freight costs, they focus on per-mile rates, fuel surcharges, and broker fees. Equipment selection rarely gets the same attention -but it should.
If you are still learning how full truckload shipping works overall, read our complete guide on FTL shipping in the USA, including costs, transit times, and when FTL makes the most sense for your freight.
The trailer type you choose affects:
- Whether your freight arrives in the condition it left in
- How available capacity is on your specific lane
- What the total cost of the shipment looks like
- Whether you will face compliance issues at the delivery point
- How flexible your options are when capacity gets tight
Not every shipment requires a full truckload trailer. For smaller freight that does not need an entire trailer, explore our guide on LTL shipping vs FTL shipping to understand which option fits your freight best.
A shipper who consistently matches their freight to the right FTL trailer type is not just avoiding problems -they are operating more efficiently, spending less time on claims and delays, and building a track record that makes them more attractive to quality carriers.
Let’s get into each option.
Understanding the Three Main FTL Trailer Types in the USA
Dry Van: The Standard Workhorse
The dry van is the most common trailer on U.S. highways. It is a fully enclosed, temperature-ambient box trailer -typically 53 feet long with swing or roll-up doors at the rear. Freight rides inside, protected from weather, but without any temperature control.
Dry vans are used for the widest range of freight categories in U.S. commerce. Consumer packaged goods, electronics, clothing, household products, automotive parts, paper goods, non-perishable food, and general retail merchandise all move in dry vans every day.
The advantages are straightforward. Dry van capacity is the most widely available of any trailer type, which means rates tend to be more competitive and finding a truck is easier. Loading and unloading is simple -most facilities have dock-height doors designed for dry van access. And because the trailer is fully enclosed, the freight is protected from rain, dust, and road debris.
What a dry van does not do is control temperature or accommodate freight that cannot fit through a rear door or be stacked inside a box. If your product is perishable, requires a specific temperature range during transit, or is too large or oddly shaped to fit inside a standard trailer, a dry van is not the right answer.
Reefer: Temperature-Controlled Freight
A reefer trailer -short for refrigerated trailer -looks similar to a dry van from the outside but carries a diesel-powered refrigeration unit mounted at the front of the trailer. That unit can maintain any temperature range the freight requires, from a standard refrigerated 34 to 38 degrees Fahrenheit down to frozen temperatures below zero. Reefer trailers are essential for freight that cannot tolerate temperature variation during transit. The most obvious category is food -fresh produce, dairy, meat, seafood, and frozen goods. But the list extends well beyond perishables. Pharmaceuticals, certain chemicals, candles, wine, cosmetics, and even some industrial components require temperature-controlled transport to maintain product integrity.
The refrigeration unit runs on diesel fuel separate from the truck’s engine, which means reefer freight carries a built-in fuel cost premium over dry van. Reefer rates are typically 20 to 40 percent higher than comparable dry van rates on the same lane, and reefer capacity is less abundant than dry van, so availability can be tighter during peak demand periods.
One important distinction: reefer trailers can also be used as standard dry van when the refrigeration unit is off. Some shippers use reefer trailers for temperature-sensitive but non-perishable freight simply to keep the cargo environment stable. This is sometimes called a “protect from freeze” or “climate control” shipment rather than a full refrigerated move.
Flatbed: Open Deck for Freight That Does Not Fit in a Box
A flatbed trailer is an open platform with no walls and no roof. Freight is loaded from the side or the top, secured with straps, chains, and binders, and in many cases covered with tarps to protect against weather.
Flatbed is the right equipment when freight is too large, too heavy, or too awkwardly shaped to load through a standard rear trailer door. It is the dominant equipment type for construction materials, steel and metal products, lumber, heavy machinery, agricultural equipment, pipe, and oversized industrial goods.
Because flatbed loading and unloading requires more manual effort -and in some cases specialized lifting equipment at the origin and destination -it typically involves longer appointment windows and more coordination than dry van or reefer. Drivers are also responsible for securing and tarping the load, which adds time on both ends of the move.
Flatbed rates are generally higher than dry van on comparable lanes, reflecting the additional labor and the specialized nature of the equipment. Flatbed capacity can also be tighter, particularly during peak construction season in spring and summer.
Dry Van vs Reefer: When Does Temperature Control Actually Matter?
This is one of the most common equipment questions shippers face. Not every product that can be affected by temperature actually requires a full reefer trailer. Understanding where the line is can save you real money.
When You Definitely Need a Reefer
If your product has a defined temperature range that must be maintained during transit for safety, regulatory, or quality reasons, you need a reefer. This includes:
- Fresh produce, meat, dairy, and seafood
- Frozen food products
- Pharmaceuticals and biologics with specific storage requirements
- Certain chemicals and compounds that are heat or cold sensitive
- Floral and live plant shipments
In these cases, using a dry van is not just a quality risk -it can be a compliance or liability issue.
When a Dry Van May Be Enough
Some shippers default to reefer for freight that could safely move in a dry van with proper planning. Consider the following:
- Non-perishable packaged food that is heat-sensitive but not strictly temperature controlled
- Electronics in sealed packaging that just need to avoid extreme heat
- Cosmetics and candles that need to avoid melting but are not regulated products
On lanes that avoid extreme temperature conditions -such as a late fall or winter move that does not cross desert regions -a dry van with appropriate packaging and transit timing can be sufficient. Talking through this with an experienced freight broker can help you make the right call without defaulting to the more expensive option unnecessarily.
The Cost Difference: Reefer vs Dry Van
Reefer freight costs more for two reasons. First, reefer capacity is more limited than dry van, which means there is less competition among carriers on any given lane. Second, reefer trailers carry built-in fuel costs from running the refrigeration unit continuously throughout the transit.
On most U.S. lanes, shippers can expect to pay 20 to 40 percent more for a reefer shipment versus an equivalent dry van load. On tight lanes during peak summer months, that premium can be higher.
Dry Van vs Flatbed: Can Your Freight Fit in a Box?
This question sounds simple, but a lot of shippers do not fully think it through until they are trying to load a piece of equipment that will not clear the trailer door.
The interior dimensions of a standard 53-foot dry van trailer are approximately 98 to 100 inches wide and 110 inches tall. Any freight that exceeds those dimensions -or that requires top or side loading because of its shape or weight distribution -needs a flatbed.
Beyond physical dimensions, consider how the freight is loaded and unloaded. Machinery or equipment that requires a crane, forklift side-loading, or specialized rigging cannot typically be handled at a standard dock with a dry van. Flatbed or other open-deck equipment gives handlers the access they need.
When Flatbed Is the Right Call
- Structural steel, beams, coils, and plate
- Lumber and dimensional building materials in large quantities
- Heavy machinery and industrial equipment
- Prefabricated construction components
- Pipe and large-diameter tubing
- Oversized or overweight loads requiring permits
If your freight falls into any of these categories, flatbed is the default choice. Attempting to force it into an enclosed trailer creates loading problems, safety risks, and damage potential.
Specialty Trailer Options Beyond the Big Three
For some freight, none of the standard three options is quite right. Here are a few specialty equipment types worth knowing:
Step deck trailers have a lower deck height than standard flatbeds, which is useful for freight that is too tall for a standard flatbed but does not require a full lowboy. Common for construction equipment and tall machinery.
Lowboy trailers are designed for extremely heavy or tall equipment that needs to ride close to the ground. Used primarily for large construction and mining equipment.
Conestoga trailers combine flatbed accessibility with an enclosed tarp system that rolls back to allow side or top loading while still providing weather protection. A good option for freight that needs flatbed access but cannot be exposed to rain or sun during transit.
Dry van team service is a standard dry van move but with two drivers who alternate driving and resting, allowing continuous movement. This is useful for time-critical shipments on long-haul lanes.
Common Mistakes Shippers Make with Trailer Selection
1) Booking Dry Van for Temperature-Sensitive Freight
A consumer goods company ships a truckload of chocolate during a July move through the Southwest. They book a dry van because the product is not technically a food safety item. The trailer hits 110 degrees inside during the Nevada stretch. The load arrives melted and is rejected. Between the product loss, the reshipping cost, and the customer credit, the decision to save on a reefer upgrade cost them thousands.
The fix is simple: if heat or cold can degrade your product, price out both options and evaluate the risk honestly.
2) Using Flatbed for Freight That Could Have Used a Dry Van
On the flip side, some shippers book flatbed because it feels easier -no concerns about fitting inside the trailer. But flatbed rates are higher, the load securement process takes more time, and freight is exposed to weather. For freight that fits comfortably inside a dry van, the enclosed trailer is almost always the better choice on cost and protection.
3) Not Confirming Equipment Compatibility at the Destination
A machinery dealer arranges a flatbed delivery to a manufacturing plant that only has indoor loading bays and no outdoor area where a flatbed can unload. The truck arrives and cannot complete the delivery. Detention charges accrue while the shipper scrambles to find an alternative solution.
Always confirm destination requirements before booking. Does the receiver have a dock or floor-level unloading? Is there outdoor space for flatbed unloading? What equipment is available on their end?
Real-World Scenario: Getting Trailer Selection Right
A mid-sized grocery distributor in the Midwest was moving two types of freight regularly: shelf-stable packaged goods and fresh produce. For years, they had been booking reefer trailers for both categories because it was simpler than managing separate equipment types.
After a conversation with S&S Brokerage Inc., they reviewed their lane data and discovered that the shelf-stable goods were moving on routes and during seasons where dry van was entirely appropriate. By shifting those loads to dry van, they reduced their freight spend on that category by roughly 25 percent without any change in product quality or delivery performance.
The produce loads stayed on reefer, where temperature control was non-negotiable. But the exercise of actually analyzing freight type by freight type -rather than defaulting to the most conservative option across the board -generated meaningful savings.
How S&S Brokerage Inc. Helps Shippers Choose the Right Equipment
S&S Brokerage Inc. works with shippers across a wide range of industries and freight types. With over 20 years of combined experience and operations across 48 states, the team understands that equipment selection is not always obvious -and that the wrong choice has real consequences.
When you bring a new freight type or lane to S&S Brokerage, the first conversation is always about understanding the freight itself. What is it? How is it packaged? Does it have temperature requirements? How is it loaded and unloaded at origin and destination? Are there dimensional or weight considerations?
That information drives the equipment recommendation -not assumptions, not defaults, and not a one-size-fits-all approach. Getting the trailer right the first time prevents the kind of costly mistakes that create friction for your operations and your customers.
Actionable Tips for Choosing the Right FTL Trailer
Document your freight specifications in advance. Before you call a broker or carrier, know the dimensions, weight, and any temperature or handling requirements for your freight. This one step eliminates most trailer selection errors.
Do not default to the most conservative option just to be safe. Reefer for shelf-stable goods and flatbed for freight that fits in a van both cost more than necessary. Analyze each freight type on its own merits.
Confirm destination requirements before booking. Know whether your receiver has a dock, floor-level access, outdoor unloading space, and any equipment available on their end. Match your trailer choice to what the destination can actually handle.
Ask about seasonal considerations. A route that works fine with a dry van in October may expose temperature-sensitive freight to risk in July. Think through the full transit environment, not just the endpoints.
Work with a broker who asks the right questions. A good freight broker does not just take your order -they help you identify the best equipment option for your specific freight and lane. If your broker has never asked you about your product’s temperature requirements or destination unloading setup, that is a gap worth addressing.
Optimize your shipping by reviewing your most frequent lanes with a broker who understands all three equipment types and can identify opportunities where a different trailer choice could save money or improve performance.
Quick Reference: Dry Van vs Reefer vs Flatbed
| Trailer Type | Best For | Temperature Control | Typical Cost vs Dry Van |
| Dry Van | General cargo, packaged goods, retail freight | No | Baseline |
| Reefer | Perishables, pharma, temp-sensitive products | Yes | 20-40% higher |
| Flatbed | Steel, lumber, machinery, oversized freight | No | 10-30% higher |
| Step Deck | Tall equipment, oversized with height limits | No | Varies |
| Lowboy | Heavy/oversized construction & mining equipment | No | Varies significantly |
Conclusion
Dry van, reefer, and flatbed each serve a distinct purpose in the U.S. freight market. Choosing correctly means your freight arrives safely, on time, and without the kind of costly surprises that come from mismatched equipment. Choosing incorrectly means rejected loads, damaged product, unnecessary expense, and delays that ripple through your supply chain.
Understanding FTL trailer types in the USA is one of the foundational skills of effective freight management. It is not complicated once you know what questions to ask -but it does require thinking through your freight type, your destination requirements, and your lane conditions before you pick up the phone.
S&S Brokerage Inc. is here to help you make that call with confidence. Whether you are moving packaged goods, temperature-sensitive products, or heavy industrial freight, our team will make sure you are on the right equipment from pickup to delivery.
Get a quote today and let S&S Brokerage match your freight to the right trailer for your lane.
Frequently Asked Questions
Q1: What is the difference between dry van, reefer, and flatbed trailers? A: Dry van is a fully enclosed, temperature-ambient trailer used for general freight. Reefer trailers have a built-in refrigeration unit that maintains a specific temperature range during transit, making them essential for perishables and temperature-sensitive goods. Flatbed trailers are open platforms with no walls or roof, used for oversized, heavy, or oddly-shaped freight that cannot fit inside an enclosed trailer.
Q2: When do I need a reefer trailer instead of a dry van? A: You need a reefer trailer when your freight requires a specific temperature range during transit. This includes fresh produce, meat, dairy, seafood, frozen goods, pharmaceuticals, and certain chemicals. If your product can be damaged, degraded, or rendered non-compliant by temperature exposure during shipping, a reefer is the right choice.
Q3: Why does reefer shipping cost more than dry van? A: Reefer shipping costs more because reefer trailers carry built-in fuel costs from running the refrigeration unit throughout transit, and reefer capacity is more limited than dry van. Less carrier availability on a given lane means less price competition. Most shippers can expect to pay 20 to 40 percent more for reefer compared to dry van on equivalent lanes.
Q4: What types of freight require a flatbed trailer? A: Flatbed trailers are used for freight that is too large, too heavy, or too awkwardly shaped to fit inside a standard enclosed trailer. Common examples include structural steel, lumber, heavy machinery, construction equipment, pipe, precast concrete, and agricultural equipment. Flatbed is also required when the freight needs side or top loading rather than rear dock access.
Q5: Can a reefer trailer be used like a dry van? A: Yes. Reefer trailers can operate with the refrigeration unit turned off, making them function similarly to a dry van. Some shippers use reefer trailers for non-perishable but climate-sensitive freight to keep the cargo environment stable. However, using a reefer when a dry van would suffice means paying a higher rate for equipment you do not need.
Q6: How do I know if my freight needs temperature control during shipping? A: Review your product’s storage and handling requirements. If the manufacturer, regulatory agency, or your quality standards specify a temperature range for storage, that range typically applies during transit as well. When in doubt, consult your product documentation or speak with an experienced freight broker who can help you evaluate the risk.
Q7: What happens if I book the wrong trailer type for my freight? A: The consequences depend on the error. Booking dry van for temperature-sensitive goods can result in product degradation, rejection at the destination, or compliance issues. Booking an enclosed trailer for freight that requires side or top loading can result in the load not fitting, creating delays and additional costs. Booking flatbed for freight that could fit in a dry van means paying a higher rate unnecessarily. Confirming your equipment choice before booking prevents all of these scenarios.