DESCRIPTION 1994 Warren Feed Trailer (DR12000 Unit 11), model AT-36-S-4 8 compartment aluminum hydraulic feed trailer, overhead discharge auger, full length top catwalk, hard top cover, tandem axle, spring ride suspension, 22.5 tires on Dayton wheels. Serial Number: 1W9AA3621R1198190 Notes: DOT inspections are current.