Rarely is a trailer ever made out of 100% aluminum. Generally some components are steel such as couplers and axles. A trailer is generally considered aluminum when the frame and floor are aluminum. Most steel framed trailers utilize a wood floor system and an aluminum exterior. The advantage of aluminum trailers are a lighter weight and more weather resistant. This makes aluminum trailers cheaper to operate and last longer. An additional benefit is that aluminum trailers will have a higher resale value later in its life than a steel frame trailer due its durability. These trailers are offered in open and enclosed. Pace and Exiss offer aluminum car trailers. The Pace Silver Arrow model is a line of aluminum trailer that Millennium offers. Silver Arrows may been found by browsing our inventory of Pace Trailers for Sale.