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When a semi truck and trailer are pictured, the semi truck cab and a standard enclosed trailer are often shown. The truth is, however, that there are many, many different types of trailers for International, Kenworth, Freightliner, Volvo, and Peterbilt trucks — all with varying weights and capacities. Looking for the right semi truck trailer size for your operation? Flatbeds and dry van trailers are just the tip of the iceberg. Learn more about trailer sizes for semi trucks below from International Used Truck Centers.
Flatbeds are one of the most common types of trailers. With a maximum freight weight of 48,000 pounds, they’re extremely versatile and can be used to haul everything from building materials to machinery to heavy tools. The maximum legal freight dimensions for flatbed trailers are listed below:
Dry van trailers are also popular in the truck world. These types of trailers are enclosed and protect the goods being transported from rain, snow, UV rays, etc. Typically, dry vans are loaded via the rear doors using a loading dock. The maximum legal freight weight of a dry van trailer is anywhere from 42,000 to 45,000 pounds.
Refrigerated trailers (a.k.a reefers) are used to transport cold and frozen items. No matter the outside temperature, the temperature inside the trailer is always low enough to keep the goods chilled. Like dry van trailers, refrigerated trailers have a maximum freight weight of 42,000 to 45,000 pounds.
Lowboy trailers are usually used to haul taller items that would otherwise cause a regular flatbed to exceed legal height limitations. Lowboys are unpowered and can be equipped with more than two axles for a maximum legal freight weight of 40,000 pounds (for a two-axle lowboy) or up to 80,000 pounds (depending on axle count).
Stretch single-drop deck trailers are longer than your average step deck. These trailers can haul longer items while preventing overhang, thanks to a maximum trailer length of 35 to 63 feet for the main deck.
If you need to transport oversized freight, a stretch double-drop trailer can do the job. Like lowboys, stretch double-drop trailers have a lower height, so you can transport items as tall as 10 feet. With a maximum legal freight weight of 45,000 pounds, there isn’t much you can’t secure to one of these trailers.
Extendable double-drop trailers can include up to three axles, and have a maximum legal freight weight of 40,000 pounds. They can transport items that are even longer than what a stretch single-drop or double-drop trailer can accommodate.
Removable gooseneck trailers feature a detachable front, which allows the trailer to drop down into a ramp for easier loading and unloading. These types of trailers can have anywhere from three to 20 (or more) axles for greater load bearing. The maximum legal freight weight for a removable gooseneck trailer in 42,000 pounds.
If you have freight that’s too long to be transported via a standard removable gooseneck trailer, a stretch version can accommodate. These trailers have three or more axles and possess a maximum legal freight weight of 42,000 to 150,000+ pounds.
Conestoga trailers feature a rolling tarp system that can be used to cover and uncover the trailer, so the cargo is well-protected.
Side kit trailers include plywood or fiberglass panels, as well as covers, to keep the cargo secure. These semi truck and trailer combos are used to transport freight that can’t be placed in smaller containers and loaded piece by piece. Side kit trailers have a maximum legal freight weight of 42,000 to 45,000 pounds.
Power only trailers are used to tow a wide variety of trailers and up to four axles are allowed to accommodate oversized and overweight freight. They also typically include a fifth-wheel hitch, pintle hitch, and ball and hitch. The legal maximum weights and dimensions vary according to the trailer type and state laws.
As the name suggests, specialized trailers are made for a specific freight and their dimensions depend on state laws. Specialized trailers are often used in conjunction with dolly trailers, double-gooseneck trailers, and perimeter trailers. They typically have a maximum freight weight of 200,000 pounds or more.
Whether you’re looking for a semi truck and trailer that’s right for your application, or you have additional questions about trailer sizes for semi trucks, International Used Truck Centers can help. We can also answer answer any questions you may have about semi truck maintenance, such as choosing the right tires and changing the oil. Contact us to learn more about our used truck inventory and hot buys!