DESCRIPTION 1981 Fruehauf Pneumatic w/ 1987 Boyd Pup Trailer (GP11571), tandem tanker train, 1981 Fruehauf pneumatic trailer, approx. 45ft long, 1,050 cubic ft capacity, 3 compartment, tri axle, 1987 Boyd pneumatic pup trailer, 1412 model dry bulk trailer, aluminum material, approx. 36ft long, 550 cubic ft capacity, spring ride suspension, 11R22.5 tires. Serial Number: 1H4B04932BL019601 and 1B9491196H0008004 Notes: