Construction

We set the standard high. That's why we created and developed the aluminum Superstructure construction. This ultra-light structure means a smoother ride, less gas consumption, and a stronger body. By the looks of some other brands, you'll see that they either use a minimal aluminum framed structure or cheap wood stick framing. Of course, if you look closer, you'll see they use far less aluminum and structural support. SunnyBrook RV pioneered the aluminum Superstructure over 15 years ago because we care about quality. So if you're looking for the best built trailers in this market, see what's under the surface. Big Dog is the leader in value!

Superstructure

Construction Photo Gallery

Insulated and enclosed holding tanks
Insulated and Enclosed Holding Tanks
Dexter E-Z Lube axles
Dexter E-Z Lube Axles
Cabinet Construction
Cabinet Construction

Heated and enclosed holding tanks are standard. They’re optional or not even offered on some other brands.

Dexter E-Z Lube axles are higher quality than most. They feature lower maintenance and more durability.

All Big Dog cabinetry is screwed together. This provides a stronger product than stapling.

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Browse photo gallery

Photos and descriptions of features found on Big Dog Fifth-Wheels.


Literature

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Construction

Learn more about our construction materials and techniques.