Appalachian’s diamond floor standard duty car trailers upgrade to a durable 6″ channel frame with heavier axles and tires than the light duty car trailer models. Some standard features are treated flooring, sealed beam lights, and slide-in ramps. This line is available in 10,000 GVWR with 5.2K axles and 8 ply rating 15″ tires or 12,000 GVWR with 6K axles and 10 ply rating 16″ tires.