DESCRIPTION 2012 Timpte Super Hopper Grain Trailer (NP6321), 50 foot, 84 inch sides, tandem axle with tag axle, air ride suspension, Airman Pneumatic Uni Dump, 11R22.5 tires, roll tarp, GVWR 77,000 pounds. Serial Number: 1TDH50035CB134977 Notes: