The N ATH 45' Fruehauf Z-Van Trailer is a smooth-sided model that reflects modern construction techniques, specifically designed around the popular trailer design used in freight transport.

Originally available in a 40' length, the 45' configuration was introduced later, accommodating diverse load requirements. Many of the earlier 40' trailers were extended to the 45' size. This trailer type also featured refrigeration capabilities and various configurations for landing gear and door rods, catering to different operational needs. The smooth side version exemplifies the evolution of trailer design, representing contemporary standards in the industry.