Septic trucks built by Robinson Vacuum Tanks are available in polished aluminum and carbon steel, and can be built as large as 5,500 gallons. They come with full-length 3/16-inch polished aluminum hose trays with hose protectors along the tank, 20-inch top and rear manways, three 5-inch sight glasses, rear inlet and discharge with brass lever valves, low-profile primary, heavy-duty bumper, LED DOT lights and work lights, large hose hooks and anti-surge baffles. Options include the choice of vacuum pump or blower, toolboxes, front hoist, a full rear-open door, multiple valve options including heat options, additional inlets and/or outlets, digital capacity readout, jetters and hose reels. 844/393-1871; www.robinsontanks.com.