(Mfg. 11/96), DOT406AL, 8600 Gallon, 4-Compartment (3000-2250-1100-2250), Double Bulkhead between 3 & 4 Compartment, Cable Operated Internal Valves, 4" API Combo Bottom Load/Unload Heads, Roto Tags, Vapor Recoveries @ Load Heads, Brake Interlock Bar, Vapor Recovery w/ Brake Interlock @ Rear of Trailer, Forward & Rear Pump-Off Lines, Optic & Thermistor Sockets, Crank Style Landing Gear, Spring Ride Suspension, 445/50R22.5 Tires on All Aluminum Wheels, Cam Style Brakes, Aluminum Fenders, Stacked R/H & L/H Hose Tubes, R/H Aluminum Fitting Box, R/H Aluminum Cone & Bucket Holder, Aluminum Ladder @ Rear of Trailer...... Lead Trailer Being Sold w/ E-18172 Matching 1997 Heil 3,500 Gal Pull Trailer...