
For contractors and professionals, a heavy duty cargo trailer is a game-changer. These trailers are designed to withstand the rigors of heavy use and can handle large loads with ease.
They often feature reinforced frames and durable materials that can support weights up to 10,000 pounds. This makes them perfect for hauling heavy equipment, tools, and supplies to and from job sites.
With their impressive capacity and durability, heavy duty cargo trailers can save contractors and professionals time and money by reducing the need for multiple trips.
Additional reading: Small Car Trailer Lightweight Cargo Trailers
Heavy Duty Cargo Trailers
The Professional Series Enclosed Trailers from Appalachian offer a range of features that make them ideal for heavy-duty cargo transport. These trailers come with striking two-tone exteriors featuring chrome accents, and are stocked in various widths, including 6ft. and 7ft. wide models.
The Contractor Grade line, on the other hand, is designed for commercial users and adds several important upgrades to the Standard Duty models. This includes a more robust frame with 16” OC crossmembers on the floor, 16” OC vertical wall posts, and 16” OC tube roof bows.
For your interest: Cargo Trailers for Bikes

The Professional Series Enclosed Trailers come with Black Viper aluminum wheels, while the Contractor Grade line features a smooth, screwless bonded exterior. Both lines offer a range of interior features, including base and overhead cabinets with wiring plugins in the Car Haulers, and wheel chocks and extra tie-down points in the Motorcycle Haulers.
Here are some key specifications for the Professional Series Enclosed Trailers:
The Contractor Grade line also features a range of durable materials, including a robust frame and eye-catching smooth, screwless bonded exterior.
Specifications
The specifications of a heavy duty cargo trailer are crucial to know before making a purchase. The GVWR, or Gross Vehicle Weight Rating, of these trailers ranges from 7,000 to 9,990 pounds, depending on the model.
The platform/loading height of these trailers varies from 19 to 21 inches, which is essential to consider when loading and unloading cargo. The axle capacity is also an important factor, with some models having a capacity of 3,500 pounds and others having a capacity of 5,200 pounds.
Discover more: When Loading a Trailer If the Cargo

The suspension system is another key aspect to consider, with all models featuring Dexter Torflex suspension. The brakes on these trailers are electric drum brakes, which provide reliable stopping power. The tire size is also standardized across all models, with a ST205/75R15 or ST225/75R15 radial tire being used.
Here's a breakdown of the specifications for each model:
The hitch ball size is standardized across all models, with a 2 1/16" ball being used. The hitch to top of ball measurement also varies, but is generally between 17 and 23 inches. The 12V end connector is a 7-way connector, which provides a reliable connection for electrical systems. The warranty offered on these trailers is a 3-year warranty.
Professional Series Trailers
The Professional Series Trailers are a cut above the rest, featuring all the upgrades of the Contractor Grade line, but with an extra dose of style and functionality. These trailers are designed to turn heads, with striking two-tone exteriors and chrome accents.

They're available in a range of sizes, including 6ft. wide single and 7ft. wide tandem models, as well as 8.5ft. wide Car Haulers. The Professional Series Trailers are stocked in various color combinations, such as Orange/Black, Black/Silver, and White.
One of the standout features of these trailers is their all-white lined interiors, which provide a clean and organized space for hauling your gear. Car Haulers also come equipped with base and overhead cabinets, complete with wiring plugins for added convenience.
Motorcycle Haulers, on the other hand, include wheel chocks and extra tie-down points for secure storage. And let's not forget the Black Viper aluminum wheels, which add a touch of sophistication to these already stylish trailers.
Take a look at this: White Cargo Trailer
Options
When building or customizing a heavy-duty cargo trailer, options are key to getting the features you need. One option to consider is the roof structure, with 12” O.C. roof bows available.
A reinforced roof can provide added durability and protection for your trailer. Salem vents are also a great option for ventilation and airflow.

If you need to haul heavy equipment or large loads, a heavy-duty drop leg jack is a must-have. The 8,000 drop leg with a removable plate is a great option for this.
For added convenience and accessibility, consider upgrading to heavy-duty ladder racks with a rear roller. This can make it easier to load and unload heavy items.
Double rear doors with a step or a ramp door with a flap are also a great option for easy access.
Explore further: Heavy-duty Palletizing Systems
Trailer Sizes and Types
When choosing a heavy-duty cargo trailer, the size and type of trailer are crucial considerations. A 7’ wide cargo trailer with tandem axles is designed for those who require additional capacity and stability.
These trailers are available in Standard Duty and Contractor Grade, and feature durable aluminum exteriors, reinforced interior walls, and various door configurations to suit different loading needs. They're perfect for professional use, offering the durability and space needed to transport larger or heavier loads securely.
The 8.5’ wide cargo trailer with tandem axles is the top choice for maximum cargo space and heavy-duty hauling. It's available in both Standard Duty and Contractor Grade, providing a spacious interior that can accommodate large items or multiple pieces of equipment.
See what others are reading: Heavy-duty Palletizing Guide: Solutions and Tips
20 Foot Combo

The 20 Foot Combo is a game-changer for heavy-duty cargo transport. It's a 20 ft (6 m) L heavy-duty enclosed cargo trailer that weighs 9,990 pounds.
This trailer is available with or without a 4 ft (1.2 m) L front deck, perfect for mounting accessories like generators and storage boxes. The front deck is a great feature for outdoor enthusiasts.
The 20 Foot Combo is designed to work seamlessly with a mobile vehicle unit telescoping tower system, which can reach up to 100 ft (30 m) tall. This integrated system is a cost-effective solution for cargo transport.
Guy wire installation is required for all heavy-duty enclosed cargo trailer combo systems, so be sure to factor that into your planning.
Additional reading: 3 Car Transport Trailer
8.5 Wide Tandem Axle
The 8.5’ wide cargo trailers with tandem axles are the top choice for maximum cargo space and heavy-duty hauling.
These trailers are available in both Standard Duty and Contractor Grade, providing a spacious interior that can accommodate large items or multiple pieces of equipment.

The tandem axles ensure a stable ride, even under heavy loads, while the high-quality construction materials, such as bonded aluminum exteriors and reinforced flooring, guarantee long-term durability.
For commercial use, these trailers offer ample space and robust features for demanding transport tasks, making them perfect for professionals who require a reliable and efficient hauling solution.
Benefits and Quality
Our heavy duty cargo trailers offer numerous benefits, including protection from the elements and secure storage for your valuable cargo.
With an enclosed trailer, you can transport your goods with confidence, knowing they're safe from wind, rain, and other harsh weather conditions.
The durable frame and weather-resistant exterior of our trailers ensure they can withstand the rigors of the road, providing long-lasting service and peace of mind.
Warranty
We stand behind our products with robust warranties and ongoing support. Our warranty is a testament to the quality and durability of our trailers.
Enclosed Trailer Warranty is a specific warranty that covers our products. It's a guarantee that we'll be there for you long after the sale.

We're not just selling a trailer, we're gaining a partner dedicated to ensuring your satisfaction. This partnership is built on trust and a shared commitment to quality.
Our warranties and ongoing support are designed to give you peace of mind. You can focus on using your trailer, knowing that we've got your back.
Benefits
Our enclosed cargo trailers offer numerous benefits that make them a great choice for anyone in need of secure and protected transportation.
One of the main advantages is that they provide excellent protection from the elements, keeping your cargo safe from rain, snow, and extreme temperatures.
Enclosed trailers are also ideal for transporting valuable or sensitive items, as they offer a high level of security and peace of mind.
Our enclosed trailer selections from Appalachian Trailers are designed to be durable and long-lasting, withstanding harsh weather conditions and heavy use.
They're also perfect for transporting large or bulky items that can't fit in an open trailer, such as furniture or equipment.
By choosing an enclosed cargo trailer, you can ensure that your cargo arrives at its destination safely and in good condition.
Superior Craftsmanship

Our trailers are built to last, using high-quality materials and expert construction techniques. This ensures that every detail is designed to withstand the rigors of the road.
The durable frame is one of the key components that make our trailers so reliable. It's built to withstand heavy use and harsh weather conditions.
The weather-resistant exterior is another critical feature that protects your cargo from the elements. This means you can transport your belongings with confidence, no matter the weather.
From the frame to the exterior, every aspect of our trailers is designed to keep your cargo safe and secure. This attention to detail is what sets our trailers apart from the rest.
Large Trailer Brands
Big Tex Trailer World represents many leading enclosed cargo trailer manufacturers, ensuring you get a high-quality product that delivers years of reliable service.
South Georgia Cargo is one of the brands they represent, known for their high-quality trailers.

RC and Texan Cargo are also part of the lineup, offering durable and reliable options.
Featherlite and Lark are two other notable brands, known for their exceptional performance and durability.
Commander Trailers and Diamond are also part of the represented brands, offering a range of cargo trailer solutions.
CM Trailers, H&H, Pace American, Look, and Forest River are also included in the lineup, providing a wide range of options for customers.
Here are some of the brands represented by Big Tex Trailer World:
- South Georgia Cargo
- RC
- Texan Cargo
- Featherlite
- Lark
- Commander Trailers
- Diamond
- CM Trailers
- H&H
- Pace American
- Look
- Forest River
Frequently Asked Questions
Who makes the highest quality enclosed trailer?
For high-quality enclosed trailers, consider Sundowner Trailers, known for their durable and well-designed products. Their trailers are a popular choice among professionals and serious enthusiasts.
Sources
- https://formulatrailers.com/trailer/contractor-dlx-cargo-trailer/
- https://haulmark.com/trailers/cargo-trailers/grizzly-hd/kodiak-7-wide
- https://www.alumatower.com/products/trailers/enclosed-cargo-trailers/ect-20d4-heavy-duty-enclosed-cargo-trailer/
- https://www.bigtextrailerworld.com/trailer-type/cargo-enclosed-trailers/
- https://www.appalachiantrailers.com/enclosed-trailers-for-sale
Featured Images: pexels.com