Great Dane has added a new, lighter weight all-aluminum trailer to its Freedom flatbed offerings. Credit: Great Dane Key Features of Great Dane's Freedom Ultra Trailer Include: Strength-to-weight efficiency: Ultra offers one of the highest concentrated load-to-tare weight ratio in its class, according to Great Dane. Ultra offers one of the highest concentrated load-to-tare weight ratio in its class, according to Great Dane. Welded main beam design : Great Dane said this offers 50% more rigidity than comparable products on the market, for better reliability and stability. : Great Dane said this offers 50% more rigidity than comparable products on the market, for better reliability and stability.